X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fswrast%2Fs_texrender.c;h=d67e48ad36c04e55d64dc13de81c96cc102cf03a;hb=5a4e0f3873657d874eb5ff52819f42ea38d54b91;hp=52d03c92ac710c9216911f8c4bccd80be374992f;hpb=c3b2230b71cb3a00a7f4c0987197d397bada650b;p=mesa.git

diff --git a/src/mesa/swrast/s_texrender.c b/src/mesa/swrast/s_texrender.c
index 52d03c92ac7..d67e48ad36c 100644
--- a/src/mesa/swrast/s_texrender.c
+++ b/src/mesa/swrast/s_texrender.c
@@ -3,10 +3,11 @@
 #include "main/colormac.h"
 #include "main/fbobject.h"
 #include "main/macros.h"
-#include "main/texfetch.h"
 #include "main/teximage.h"
 #include "main/renderbuffer.h"
 #include "swrast/swrast.h"
+#include "swrast/s_context.h"
+#include "swrast/s_texfetch.h"
 
 
 /*
@@ -14,512 +15,13 @@
  */
 
 
-/**
- * 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)
+delete_texture_wrapper(struct gl_context *ctx, 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,
@@ -528,84 +30,30 @@ wrap_texture(struct gl_context *ctx, struct gl_renderbuffer_attachment *att)
 static void
 update_wrapper(struct gl_context *ctx, struct gl_renderbuffer_attachment *att)
 {
-   struct texture_renderbuffer *trb
-      = (struct texture_renderbuffer *) att->Renderbuffer;
+   struct gl_renderbuffer *rb = att->Renderbuffer;
+   struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
+   struct swrast_texture_image *swImage;
+   mesa_format format;
+   GLuint zOffset;
 
    (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;
-   }
+   swImage = swrast_texture_image(rb->TexImage);
+   assert(swImage);
 
-   trb->Fetchf = trb->TexImage->FetchTexelf;
+   format = swImage->Base.TexFormat;
 
    if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) {
-      trb->Yoffset = att->Zoffset;
-      trb->Zoffset = 0;
+      zOffset = 0;
    }
    else {
-      trb->Yoffset = 0;
-      trb->Zoffset = att->Zoffset;
+      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;
+   /* Want to store linear values, not sRGB */
+   rb->Format = _mesa_get_srgb_format_linear(format);
 
-   /* 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;
+   srb->Buffer = swImage->ImageSlices[zOffset];
 }
 
 
@@ -632,23 +80,24 @@ _swrast_render_texture(struct gl_context *ctx,
                        struct gl_framebuffer *fb,
                        struct gl_renderbuffer_attachment *att)
 {
+   struct gl_renderbuffer *rb = att->Renderbuffer;
    (void) fb;
 
-   if (!att->Renderbuffer) {
-      wrap_texture(ctx, att);
-   }
+   /* plug in our texture_renderbuffer-specific functions */
+   rb->Delete = delete_texture_wrapper;
+
    update_wrapper(ctx, att);
 }
 
 
 void
 _swrast_finish_render_texture(struct gl_context *ctx,
-                              struct gl_renderbuffer_attachment *att)
+                              struct gl_renderbuffer *rb)
 {
    /* do nothing */
    /* The renderbuffer texture wrapper will get deleted by the
     * normal mechanism for deleting renderbuffers.
     */
    (void) ctx;
-   (void) att;
+   (void) rb;
 }