From 35484135119fcf55fe1cbb1fcdd0e035f581fcfb Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 18 May 2011 07:21:08 +0000 Subject: xkeyboard-config libX11 pixman mesa git update 18 May 2011 --- mesalib/src/mesa/main/texrender.c | 1311 ++++++++++++++++++------------------- 1 file changed, 654 insertions(+), 657 deletions(-) (limited to 'mesalib/src/mesa/main/texrender.c') diff --git a/mesalib/src/mesa/main/texrender.c b/mesalib/src/mesa/main/texrender.c index 4bcef9899..a7641a5f9 100644 --- a/mesalib/src/mesa/main/texrender.c +++ b/mesalib/src/mesa/main/texrender.c @@ -1,657 +1,654 @@ - -#include "context.h" -#include "colormac.h" -#include "fbobject.h" -#include "macros.h" -#include "texfetch.h" -#include "teximage.h" -#include "texrender.h" -#include "renderbuffer.h" - - -/* - * Render-to-texture code for GL_EXT_framebuffer_object - */ - - -/** - * Derived from gl_renderbuffer class - */ -struct texture_renderbuffer -{ - struct gl_renderbuffer Base; /**< Base class object */ - struct gl_texture_image *TexImage; - StoreTexelFunc Store; - FetchTexelFuncF Fetchf; - GLint Yoffset; /**< Layer for 1D array textures. */ - GLint Zoffset; /**< Layer for 2D array textures, or slice - * for 3D textures - */ -}; - - -/** - * Get row of values from the renderbuffer that wraps a texture image. - */ -static void -texture_get_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, - GLint x, GLint y, void *values) -{ - const struct texture_renderbuffer *trb - = (const struct texture_renderbuffer *) rb; - const GLint z = trb->Zoffset; - GLuint i; - - ASSERT(trb->TexImage->Width == rb->Width); - ASSERT(trb->TexImage->Height == rb->Height); - - y += trb->Yoffset; - - if (rb->DataType == CHAN_TYPE) { - GLchan *rgbaOut = (GLchan *) values; - for (i = 0; i < count; i++) { - GLfloat rgba[4]; - trb->Fetchf(trb->TexImage, x + i, y, z, rgba); - UNCLAMPED_FLOAT_TO_RGBA_CHAN(rgbaOut + 4 * i, rgba); - } - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - GLushort *zValues = (GLushort *) values; - for (i = 0; i < count; i++) { - GLfloat flt; - trb->Fetchf(trb->TexImage, x + i, y, z, &flt); - zValues[i] = (GLushort) (flt * 0xffff); - } - } - else if (rb->DataType == GL_UNSIGNED_INT) { - GLuint *zValues = (GLuint *) values; - /* - const GLdouble scale = (GLdouble) 0xffffffff; - */ - for (i = 0; i < count; i++) { - GLfloat flt; - trb->Fetchf(trb->TexImage, x + i, y, z, &flt); -#if 0 - /* this should work, but doesn't (overflow due to low precision) */ - zValues[i] = (GLuint) (flt * scale); -#else - /* temporary hack */ - zValues[i] = ((GLuint) (flt * 0xffffff)) << 8; -#endif - } - } - else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { - GLuint *zValues = (GLuint *) values; - for (i = 0; i < count; i++) { - GLfloat flt; - trb->Fetchf(trb->TexImage, x + i, y, z, &flt); - zValues[i] = ((GLuint) (flt * 0xffffff)) << 8; - } - } - else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { - GLuint *zValues = (GLuint *) values; - for (i = 0; i < count; i++) { - GLfloat flt; - trb->Fetchf(trb->TexImage, x + i, y, z, &flt); - zValues[i] = (GLuint) (flt * 0xffffff); - } - } - else { - _mesa_problem(ctx, "invalid rb->DataType in texture_get_row"); - } -} - - -static void -texture_get_values(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, - const GLint x[], const GLint y[], void *values) -{ - const struct texture_renderbuffer *trb - = (const struct texture_renderbuffer *) rb; - const GLint z = trb->Zoffset; - GLuint i; - - if (rb->DataType == CHAN_TYPE) { - GLchan *rgbaOut = (GLchan *) values; - for (i = 0; i < count; i++) { - GLfloat rgba[4]; - trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, - z, rgba); - UNCLAMPED_FLOAT_TO_RGBA_CHAN(rgbaOut + 4 * i, rgba); - } - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - GLushort *zValues = (GLushort *) values; - for (i = 0; i < count; i++) { - GLfloat flt; - trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, - z, &flt); - zValues[i] = (GLushort) (flt * 0xffff); - } - } - else if (rb->DataType == GL_UNSIGNED_INT) { - GLuint *zValues = (GLuint *) values; - for (i = 0; i < count; i++) { - GLfloat flt; - trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, - z, &flt); -#if 0 - zValues[i] = (GLuint) (flt * 0xffffffff); -#else - zValues[i] = ((GLuint) (flt * 0xffffff)) << 8; -#endif - } - } - else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { - GLuint *zValues = (GLuint *) values; - for (i = 0; i < count; i++) { - GLfloat flt; - trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, - z, &flt); - zValues[i] = ((GLuint) (flt * 0xffffff)) << 8; - } - } - else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { - GLuint *zValues = (GLuint *) values; - for (i = 0; i < count; i++) { - GLfloat flt; - trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, - z, &flt); - zValues[i] = (GLuint) (flt * 0xffffff); - } - } - else { - _mesa_problem(ctx, "invalid rb->DataType in texture_get_values"); - } -} - - -/** - * Put row of values into a renderbuffer that wraps a texture image. - */ -static void -texture_put_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, - GLint x, GLint y, const void *values, const GLubyte *mask) -{ - const struct texture_renderbuffer *trb - = (const struct texture_renderbuffer *) rb; - const GLint z = trb->Zoffset; - GLuint i; - - y += trb->Yoffset; - - if (rb->DataType == CHAN_TYPE) { - const GLchan *rgba = (const GLchan *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, rgba); - } - rgba += 4; - } - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - const GLushort *zValues = (const GLushort *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, zValues + i); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, zValues + i); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff)); - trb->Store(trb->TexImage, x + i, y, z, &flt); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff)); - trb->Store(trb->TexImage, x + i, y, z, &flt); - } - } - } - else { - _mesa_problem(ctx, "invalid rb->DataType in texture_put_row"); - } -} - -/** - * Put row of RGB values into a renderbuffer that wraps a texture image. - */ -static void -texture_put_row_rgb(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, - GLint x, GLint y, const void *values, const GLubyte *mask) -{ - const struct texture_renderbuffer *trb - = (const struct texture_renderbuffer *) rb; - const GLint z = trb->Zoffset; - GLuint i; - - y += trb->Yoffset; - - if (rb->DataType == CHAN_TYPE) { - const GLchan *rgb = (const GLchan *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, rgb); - } - rgb += 3; - } - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - const GLushort *zValues = (const GLushort *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, zValues + i); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, zValues + i); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff)); - trb->Store(trb->TexImage, x + i, y, z, &flt); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff)); - trb->Store(trb->TexImage, x + i, y, z, &flt); - } - } - } - else { - _mesa_problem(ctx, "invalid rb->DataType in texture_put_row"); - } -} - - -static void -texture_put_mono_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, - GLint x, GLint y, const void *value, const GLubyte *mask) -{ - const struct texture_renderbuffer *trb - = (const struct texture_renderbuffer *) rb; - const GLint z = trb->Zoffset; - GLuint i; - - y += trb->Yoffset; - - if (rb->DataType == CHAN_TYPE) { - const GLchan *rgba = (const GLchan *) value; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, rgba); - } - } - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - const GLushort zValue = *((const GLushort *) value); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, &zValue); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT) { - const GLuint zValue = *((const GLuint *) value); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, &zValue); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { - const GLuint zValue = *((const GLuint *) value); - const GLfloat flt = (GLfloat) ((zValue >> 8) * (1.0 / 0xffffff)); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, &flt); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { - const GLuint zValue = *((const GLuint *) value); - const GLfloat flt = (GLfloat) ((zValue & 0xffffff) * (1.0 / 0xffffff)); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x + i, y, z, &flt); - } - } - } - else { - _mesa_problem(ctx, "invalid rb->DataType in texture_put_mono_row"); - } -} - - -static void -texture_put_values(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, - const GLint x[], const GLint y[], const void *values, - const GLubyte *mask) -{ - const struct texture_renderbuffer *trb - = (const struct texture_renderbuffer *) rb; - const GLint z = trb->Zoffset; - GLuint i; - - if (rb->DataType == CHAN_TYPE) { - const GLchan *rgba = (const GLchan *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba); - } - rgba += 4; - } - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - const GLushort *zValues = (const GLushort *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, zValues + i); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, zValues + i); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff)); - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { - const GLuint *zValues = (const GLuint *) values; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff)); - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt); - } - } - } - else { - _mesa_problem(ctx, "invalid rb->DataType in texture_put_values"); - } -} - - -static void -texture_put_mono_values(struct gl_context *ctx, struct gl_renderbuffer *rb, - GLuint count, const GLint x[], const GLint y[], - const void *value, const GLubyte *mask) -{ - const struct texture_renderbuffer *trb - = (const struct texture_renderbuffer *) rb; - const GLint z = trb->Zoffset; - GLuint i; - - if (rb->DataType == CHAN_TYPE) { - const GLchan *rgba = (const GLchan *) value; - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT) { - const GLuint zValue = *((const GLuint *) value); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue); - } - } - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - const GLushort zValue = *((const GLushort *) value); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { - const GLuint zValue = *((const GLuint *) value); - const GLfloat flt = (GLfloat) ((zValue >> 8) * (1.0 / 0xffffff)); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt); - } - } - } - else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { - const GLuint zValue = *((const GLuint *) value); - const GLfloat flt = (GLfloat) ((zValue & 0xffffff) * (1.0 / 0xffffff)); - for (i = 0; i < count; i++) { - if (!mask || mask[i]) { - trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt); - } - } - } - else { - _mesa_problem(ctx, "invalid rb->DataType in texture_put_mono_values"); - } -} - - -static void -store_nop(struct gl_texture_image *texImage, - GLint col, GLint row, GLint img, - const void *texel) -{ -} - - -static void -delete_texture_wrapper(struct gl_renderbuffer *rb) -{ - ASSERT(rb->RefCount == 0); - free(rb); -} - - -/** - * This function creates a renderbuffer object which wraps a texture image. - * The new renderbuffer is plugged into the given attachment point. - * This allows rendering into the texture as if it were a renderbuffer. - */ -static void -wrap_texture(struct gl_context *ctx, struct gl_renderbuffer_attachment *att) -{ - struct texture_renderbuffer *trb; - const GLuint name = 0; - - ASSERT(att->Type == GL_TEXTURE); - ASSERT(att->Renderbuffer == NULL); - - trb = CALLOC_STRUCT(texture_renderbuffer); - if (!trb) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "wrap_texture"); - return; - } - - /* init base gl_renderbuffer fields */ - _mesa_init_renderbuffer(&trb->Base, name); - /* plug in our texture_renderbuffer-specific functions */ - trb->Base.Delete = delete_texture_wrapper; - trb->Base.AllocStorage = NULL; /* illegal! */ - trb->Base.GetRow = texture_get_row; - trb->Base.GetValues = texture_get_values; - trb->Base.PutRow = texture_put_row; - trb->Base.PutRowRGB = texture_put_row_rgb; - trb->Base.PutMonoRow = texture_put_mono_row; - trb->Base.PutValues = texture_put_values; - trb->Base.PutMonoValues = texture_put_mono_values; - - /* update attachment point */ - _mesa_reference_renderbuffer(&att->Renderbuffer, &(trb->Base)); -} - -/** - * Update the renderbuffer wrapper for rendering to a texture. - * For example, update the width, height of the RB based on the texture size, - * update the internal format info, etc. - */ -static void -update_wrapper(struct gl_context *ctx, struct gl_renderbuffer_attachment *att) -{ - struct texture_renderbuffer *trb - = (struct texture_renderbuffer *) att->Renderbuffer; - GLuint unused; - - (void) ctx; - ASSERT(trb); - - trb->TexImage = _mesa_get_attachment_teximage(att); - ASSERT(trb->TexImage); - - trb->Store = _mesa_get_texel_store_func(trb->TexImage->TexFormat); - if (!trb->Store) { - /* we'll never draw into some textures (compressed formats) */ - trb->Store = store_nop; - } - - trb->Fetchf = trb->TexImage->FetchTexelf; - - if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) { - trb->Yoffset = att->Zoffset; - trb->Zoffset = 0; - } - else { - trb->Yoffset = 0; - trb->Zoffset = att->Zoffset; - } - - trb->Base.Width = trb->TexImage->Width; - trb->Base.Height = trb->TexImage->Height; - trb->Base.InternalFormat = trb->TexImage->InternalFormat; - trb->Base.Format = trb->TexImage->TexFormat; - - /* XXX may need more special cases here */ - switch (trb->TexImage->TexFormat) { - case MESA_FORMAT_Z24_S8: - trb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT; - trb->Base._BaseFormat = GL_DEPTH_STENCIL; - break; - case MESA_FORMAT_S8_Z24: - trb->Base.DataType = GL_UNSIGNED_INT_8_24_REV_MESA; - trb->Base._BaseFormat = GL_DEPTH_STENCIL; - break; - case MESA_FORMAT_Z24_X8: - trb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT; - trb->Base._BaseFormat = GL_DEPTH_COMPONENT; - break; - case MESA_FORMAT_X8_Z24: - trb->Base.DataType = GL_UNSIGNED_INT_8_24_REV_MESA; - trb->Base._BaseFormat = GL_DEPTH_COMPONENT; - break; - case MESA_FORMAT_Z16: - trb->Base.DataType = GL_UNSIGNED_SHORT; - trb->Base._BaseFormat = GL_DEPTH_COMPONENT; - break; - case MESA_FORMAT_Z32: - trb->Base.DataType = GL_UNSIGNED_INT; - trb->Base._BaseFormat = GL_DEPTH_COMPONENT; - break; - /* SRGB formats pre EXT_framebuffer_sRGB don't do sRGB translations on FBO readback */ - case MESA_FORMAT_SRGB8: - trb->Fetchf = _mesa_get_texel_fetch_func(MESA_FORMAT_RGB888, _mesa_get_texture_dimensions(att->Texture->Target)); - trb->Base.DataType = CHAN_TYPE; - trb->Base._BaseFormat = GL_RGBA; - break; - case MESA_FORMAT_SRGBA8: - trb->Fetchf = _mesa_get_texel_fetch_func(MESA_FORMAT_RGBA8888, _mesa_get_texture_dimensions(att->Texture->Target)); - trb->Base.DataType = CHAN_TYPE; - trb->Base._BaseFormat = GL_RGBA; - break; - case MESA_FORMAT_SARGB8: - trb->Fetchf = _mesa_get_texel_fetch_func(MESA_FORMAT_ARGB8888, _mesa_get_texture_dimensions(att->Texture->Target)); - trb->Base.DataType = CHAN_TYPE; - trb->Base._BaseFormat = GL_RGBA; - break; - default: - _mesa_format_to_type_and_comps(trb->TexImage->TexFormat, - &trb->Base.DataType, &unused); - trb->Base._BaseFormat = - _mesa_base_fbo_format(ctx, trb->TexImage->InternalFormat); - } - trb->Base.Data = trb->TexImage->Data; -} - - - -/** - * Called when rendering to a texture image begins, or when changing - * the dest mipmap level, cube face, etc. - * This is a fallback routine for software render-to-texture. - * - * Called via the glRenderbufferTexture1D/2D/3D() functions - * and elsewhere (such as glTexImage2D). - * - * The image we're rendering into is - * att->Texture->Image[att->CubeMapFace][att->TextureLevel]; - * It'll never be NULL. - * - * \param fb the framebuffer object the texture is being bound to - * \param att the fb attachment point of the texture - * - * \sa _mesa_framebuffer_renderbuffer - */ -void -_mesa_render_texture(struct gl_context *ctx, - struct gl_framebuffer *fb, - struct gl_renderbuffer_attachment *att) -{ - (void) fb; - - if (!att->Renderbuffer) { - wrap_texture(ctx, att); - } - update_wrapper(ctx, att); -} - - -void -_mesa_finish_render_texture(struct gl_context *ctx, - struct gl_renderbuffer_attachment *att) -{ - /* do nothing */ - /* The renderbuffer texture wrapper will get deleted by the - * normal mechanism for deleting renderbuffers. - */ - (void) ctx; - (void) att; -} + +#include "context.h" +#include "colormac.h" +#include "fbobject.h" +#include "macros.h" +#include "texfetch.h" +#include "teximage.h" +#include "texrender.h" +#include "renderbuffer.h" + + +/* + * Render-to-texture code for GL_EXT_framebuffer_object + */ + + +/** + * Derived from gl_renderbuffer class + */ +struct texture_renderbuffer +{ + struct gl_renderbuffer Base; /**< Base class object */ + struct gl_texture_image *TexImage; + StoreTexelFunc Store; + FetchTexelFuncF Fetchf; + GLint Yoffset; /**< Layer for 1D array textures. */ + GLint Zoffset; /**< Layer for 2D array textures, or slice + * for 3D textures + */ +}; + + +/** + * Get row of values from the renderbuffer that wraps a texture image. + */ +static void +texture_get_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, void *values) +{ + const struct texture_renderbuffer *trb + = (const struct texture_renderbuffer *) rb; + const GLint z = trb->Zoffset; + GLuint i; + + ASSERT(trb->TexImage->Width == rb->Width); + ASSERT(trb->TexImage->Height == rb->Height); + + y += trb->Yoffset; + + if (rb->DataType == CHAN_TYPE) { + GLchan *rgbaOut = (GLchan *) values; + for (i = 0; i < count; i++) { + GLfloat rgba[4]; + trb->Fetchf(trb->TexImage, x + i, y, z, rgba); + UNCLAMPED_FLOAT_TO_RGBA_CHAN(rgbaOut + 4 * i, rgba); + } + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + GLushort *zValues = (GLushort *) values; + for (i = 0; i < count; i++) { + GLfloat flt; + trb->Fetchf(trb->TexImage, x + i, y, z, &flt); + zValues[i] = (GLushort) (flt * 0xffff); + } + } + else if (rb->DataType == GL_UNSIGNED_INT) { + GLuint *zValues = (GLuint *) values; + /* + const GLdouble scale = (GLdouble) 0xffffffff; + */ + for (i = 0; i < count; i++) { + GLfloat flt; + trb->Fetchf(trb->TexImage, x + i, y, z, &flt); +#if 0 + /* this should work, but doesn't (overflow due to low precision) */ + zValues[i] = (GLuint) (flt * scale); +#else + /* temporary hack */ + zValues[i] = ((GLuint) (flt * 0xffffff)) << 8; +#endif + } + } + else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { + GLuint *zValues = (GLuint *) values; + for (i = 0; i < count; i++) { + GLfloat flt; + trb->Fetchf(trb->TexImage, x + i, y, z, &flt); + zValues[i] = ((GLuint) (flt * 0xffffff)) << 8; + } + } + else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { + GLuint *zValues = (GLuint *) values; + for (i = 0; i < count; i++) { + GLfloat flt; + trb->Fetchf(trb->TexImage, x + i, y, z, &flt); + zValues[i] = (GLuint) (flt * 0xffffff); + } + } + else { + _mesa_problem(ctx, "invalid rb->DataType in texture_get_row"); + } +} + + +static void +texture_get_values(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + const struct texture_renderbuffer *trb + = (const struct texture_renderbuffer *) rb; + const GLint z = trb->Zoffset; + GLuint i; + + if (rb->DataType == CHAN_TYPE) { + GLchan *rgbaOut = (GLchan *) values; + for (i = 0; i < count; i++) { + GLfloat rgba[4]; + trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, + z, rgba); + UNCLAMPED_FLOAT_TO_RGBA_CHAN(rgbaOut + 4 * i, rgba); + } + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + GLushort *zValues = (GLushort *) values; + for (i = 0; i < count; i++) { + GLfloat flt; + trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, + z, &flt); + zValues[i] = (GLushort) (flt * 0xffff); + } + } + else if (rb->DataType == GL_UNSIGNED_INT) { + GLuint *zValues = (GLuint *) values; + for (i = 0; i < count; i++) { + GLfloat flt; + trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, + z, &flt); +#if 0 + zValues[i] = (GLuint) (flt * 0xffffffff); +#else + zValues[i] = ((GLuint) (flt * 0xffffff)) << 8; +#endif + } + } + else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { + GLuint *zValues = (GLuint *) values; + for (i = 0; i < count; i++) { + GLfloat flt; + trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, + z, &flt); + zValues[i] = ((GLuint) (flt * 0xffffff)) << 8; + } + } + else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { + GLuint *zValues = (GLuint *) values; + for (i = 0; i < count; i++) { + GLfloat flt; + trb->Fetchf(trb->TexImage, x[i], y[i] + trb->Yoffset, + z, &flt); + zValues[i] = (GLuint) (flt * 0xffffff); + } + } + else { + _mesa_problem(ctx, "invalid rb->DataType in texture_get_values"); + } +} + + +/** + * Put row of values into a renderbuffer that wraps a texture image. + */ +static void +texture_put_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + const struct texture_renderbuffer *trb + = (const struct texture_renderbuffer *) rb; + const GLint z = trb->Zoffset; + GLuint i; + + y += trb->Yoffset; + + if (rb->DataType == CHAN_TYPE) { + const GLchan *rgba = (const GLchan *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, rgba); + } + rgba += 4; + } + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + const GLushort *zValues = (const GLushort *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, zValues + i); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, zValues + i); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff)); + trb->Store(trb->TexImage, x + i, y, z, &flt); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff)); + trb->Store(trb->TexImage, x + i, y, z, &flt); + } + } + } + else { + _mesa_problem(ctx, "invalid rb->DataType in texture_put_row"); + } +} + +/** + * Put row of RGB values into a renderbuffer that wraps a texture image. + */ +static void +texture_put_row_rgb(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + const struct texture_renderbuffer *trb + = (const struct texture_renderbuffer *) rb; + const GLint z = trb->Zoffset; + GLuint i; + + y += trb->Yoffset; + + if (rb->DataType == CHAN_TYPE) { + const GLchan *rgb = (const GLchan *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, rgb); + } + rgb += 3; + } + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + const GLushort *zValues = (const GLushort *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, zValues + i); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, zValues + i); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff)); + trb->Store(trb->TexImage, x + i, y, z, &flt); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff)); + trb->Store(trb->TexImage, x + i, y, z, &flt); + } + } + } + else { + _mesa_problem(ctx, "invalid rb->DataType in texture_put_row"); + } +} + + +static void +texture_put_mono_row(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + const struct texture_renderbuffer *trb + = (const struct texture_renderbuffer *) rb; + const GLint z = trb->Zoffset; + GLuint i; + + y += trb->Yoffset; + + if (rb->DataType == CHAN_TYPE) { + const GLchan *rgba = (const GLchan *) value; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, rgba); + } + } + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + const GLushort zValue = *((const GLushort *) value); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, &zValue); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT) { + const GLuint zValue = *((const GLuint *) value); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, &zValue); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { + const GLuint zValue = *((const GLuint *) value); + const GLfloat flt = (GLfloat) ((zValue >> 8) * (1.0 / 0xffffff)); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, &flt); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { + const GLuint zValue = *((const GLuint *) value); + const GLfloat flt = (GLfloat) ((zValue & 0xffffff) * (1.0 / 0xffffff)); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x + i, y, z, &flt); + } + } + } + else { + _mesa_problem(ctx, "invalid rb->DataType in texture_put_mono_row"); + } +} + + +static void +texture_put_values(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], const void *values, + const GLubyte *mask) +{ + const struct texture_renderbuffer *trb + = (const struct texture_renderbuffer *) rb; + const GLint z = trb->Zoffset; + GLuint i; + + if (rb->DataType == CHAN_TYPE) { + const GLchan *rgba = (const GLchan *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba); + } + rgba += 4; + } + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + const GLushort *zValues = (const GLushort *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, zValues + i); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, zValues + i); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLfloat flt = (GLfloat) ((zValues[i] >> 8) * (1.0 / 0xffffff)); + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { + const GLuint *zValues = (const GLuint *) values; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLfloat flt = (GLfloat) ((zValues[i] & 0xffffff) * (1.0 / 0xffffff)); + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt); + } + } + } + else { + _mesa_problem(ctx, "invalid rb->DataType in texture_put_values"); + } +} + + +static void +texture_put_mono_values(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + const struct texture_renderbuffer *trb + = (const struct texture_renderbuffer *) rb; + const GLint z = trb->Zoffset; + GLuint i; + + if (rb->DataType == CHAN_TYPE) { + const GLchan *rgba = (const GLchan *) value; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, rgba); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT) { + const GLuint zValue = *((const GLuint *) value); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue); + } + } + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + const GLushort zValue = *((const GLushort *) value); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &zValue); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_24_8_EXT) { + const GLuint zValue = *((const GLuint *) value); + const GLfloat flt = (GLfloat) ((zValue >> 8) * (1.0 / 0xffffff)); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt); + } + } + } + else if (rb->DataType == GL_UNSIGNED_INT_8_24_REV_MESA) { + const GLuint zValue = *((const GLuint *) value); + const GLfloat flt = (GLfloat) ((zValue & 0xffffff) * (1.0 / 0xffffff)); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + trb->Store(trb->TexImage, x[i], y[i] + trb->Yoffset, z, &flt); + } + } + } + else { + _mesa_problem(ctx, "invalid rb->DataType in texture_put_mono_values"); + } +} + + +static void +store_nop(struct gl_texture_image *texImage, + GLint col, GLint row, GLint img, + const void *texel) +{ +} + + +static void +delete_texture_wrapper(struct gl_renderbuffer *rb) +{ + ASSERT(rb->RefCount == 0); + free(rb); +} + + +/** + * This function creates a renderbuffer object which wraps a texture image. + * The new renderbuffer is plugged into the given attachment point. + * This allows rendering into the texture as if it were a renderbuffer. + */ +static void +wrap_texture(struct gl_context *ctx, struct gl_renderbuffer_attachment *att) +{ + struct texture_renderbuffer *trb; + const GLuint name = 0; + + ASSERT(att->Type == GL_TEXTURE); + ASSERT(att->Renderbuffer == NULL); + + trb = CALLOC_STRUCT(texture_renderbuffer); + if (!trb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "wrap_texture"); + return; + } + + /* init base gl_renderbuffer fields */ + _mesa_init_renderbuffer(&trb->Base, name); + /* plug in our texture_renderbuffer-specific functions */ + trb->Base.Delete = delete_texture_wrapper; + trb->Base.AllocStorage = NULL; /* illegal! */ + trb->Base.GetRow = texture_get_row; + trb->Base.GetValues = texture_get_values; + trb->Base.PutRow = texture_put_row; + trb->Base.PutRowRGB = texture_put_row_rgb; + trb->Base.PutMonoRow = texture_put_mono_row; + trb->Base.PutValues = texture_put_values; + trb->Base.PutMonoValues = texture_put_mono_values; + + /* update attachment point */ + _mesa_reference_renderbuffer(&att->Renderbuffer, &(trb->Base)); +} + +/** + * Update the renderbuffer wrapper for rendering to a texture. + * For example, update the width, height of the RB based on the texture size, + * update the internal format info, etc. + */ +static void +update_wrapper(struct gl_context *ctx, struct gl_renderbuffer_attachment *att) +{ + struct texture_renderbuffer *trb + = (struct texture_renderbuffer *) att->Renderbuffer; + + (void) ctx; + ASSERT(trb); + + trb->TexImage = _mesa_get_attachment_teximage(att); + ASSERT(trb->TexImage); + + trb->Store = _mesa_get_texel_store_func(trb->TexImage->TexFormat); + if (!trb->Store) { + /* we'll never draw into some textures (compressed formats) */ + trb->Store = store_nop; + } + + trb->Fetchf = trb->TexImage->FetchTexelf; + + if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) { + trb->Yoffset = att->Zoffset; + trb->Zoffset = 0; + } + else { + trb->Yoffset = 0; + trb->Zoffset = att->Zoffset; + } + + trb->Base.Width = trb->TexImage->Width; + trb->Base.Height = trb->TexImage->Height; + trb->Base.InternalFormat = trb->TexImage->InternalFormat; + trb->Base.Format = trb->TexImage->TexFormat; + + /* XXX may need more special cases here */ + switch (trb->TexImage->TexFormat) { + case MESA_FORMAT_Z24_S8: + trb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT; + trb->Base._BaseFormat = GL_DEPTH_STENCIL; + break; + case MESA_FORMAT_S8_Z24: + trb->Base.DataType = GL_UNSIGNED_INT_8_24_REV_MESA; + trb->Base._BaseFormat = GL_DEPTH_STENCIL; + break; + case MESA_FORMAT_Z24_X8: + trb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT; + trb->Base._BaseFormat = GL_DEPTH_COMPONENT; + break; + case MESA_FORMAT_X8_Z24: + trb->Base.DataType = GL_UNSIGNED_INT_8_24_REV_MESA; + trb->Base._BaseFormat = GL_DEPTH_COMPONENT; + break; + case MESA_FORMAT_Z16: + trb->Base.DataType = GL_UNSIGNED_SHORT; + trb->Base._BaseFormat = GL_DEPTH_COMPONENT; + break; + case MESA_FORMAT_Z32: + trb->Base.DataType = GL_UNSIGNED_INT; + trb->Base._BaseFormat = GL_DEPTH_COMPONENT; + break; + /* SRGB formats pre EXT_framebuffer_sRGB don't do sRGB translations on FBO readback */ + case MESA_FORMAT_SRGB8: + trb->Fetchf = _mesa_get_texel_fetch_func(MESA_FORMAT_RGB888, _mesa_get_texture_dimensions(att->Texture->Target)); + trb->Base.DataType = CHAN_TYPE; + trb->Base._BaseFormat = GL_RGBA; + break; + case MESA_FORMAT_SRGBA8: + trb->Fetchf = _mesa_get_texel_fetch_func(MESA_FORMAT_RGBA8888, _mesa_get_texture_dimensions(att->Texture->Target)); + trb->Base.DataType = CHAN_TYPE; + trb->Base._BaseFormat = GL_RGBA; + break; + case MESA_FORMAT_SARGB8: + trb->Fetchf = _mesa_get_texel_fetch_func(MESA_FORMAT_ARGB8888, _mesa_get_texture_dimensions(att->Texture->Target)); + trb->Base.DataType = CHAN_TYPE; + trb->Base._BaseFormat = GL_RGBA; + break; + default: + trb->Base.DataType = CHAN_TYPE; + trb->Base._BaseFormat = GL_RGBA; + } + trb->Base.Data = trb->TexImage->Data; +} + + + +/** + * Called when rendering to a texture image begins, or when changing + * the dest mipmap level, cube face, etc. + * This is a fallback routine for software render-to-texture. + * + * Called via the glRenderbufferTexture1D/2D/3D() functions + * and elsewhere (such as glTexImage2D). + * + * The image we're rendering into is + * att->Texture->Image[att->CubeMapFace][att->TextureLevel]; + * It'll never be NULL. + * + * \param fb the framebuffer object the texture is being bound to + * \param att the fb attachment point of the texture + * + * \sa _mesa_framebuffer_renderbuffer + */ +void +_mesa_render_texture(struct gl_context *ctx, + struct gl_framebuffer *fb, + struct gl_renderbuffer_attachment *att) +{ + (void) fb; + + if (!att->Renderbuffer) { + wrap_texture(ctx, att); + } + update_wrapper(ctx, att); +} + + +void +_mesa_finish_render_texture(struct gl_context *ctx, + struct gl_renderbuffer_attachment *att) +{ + /* do nothing */ + /* The renderbuffer texture wrapper will get deleted by the + * normal mechanism for deleting renderbuffers. + */ + (void) ctx; + (void) att; +} -- cgit v1.2.3