FXT1 preparations

3 files changed, 230 insertions, 59 deletions

diff --git a/src/mesa/drivers/glide/fxdd.c b/src/mesa/drivers/glide/fxdd.c
index 510b9ce43b..106c7d0e07 100644
--- a/src/mesa/drivers/glide/fxdd.c
+++ b/src/mesa/drivers/glide/fxdd.c
@@ -1730,7 +1730,6 @@ fxSetupDDPointers(GLcontext * ctx)
    ctx->Driver.TexSubImage2D = fxDDTexSubImage2D;
    ctx->Driver.CompressedTexImage2D = fxDDCompressedTexImage2D;
    ctx->Driver.CompressedTexSubImage2D = fxDDCompressedTexSubImage2D;
-   ctx->Driver.IsCompressedFormat = fxDDIsCompressedFormat;
    ctx->Driver.CompressedTextureSize = fxDDCompressedTextureSize;
    ctx->Driver.TestProxyTexImage = fxDDTestProxyTexImage;
    ctx->Driver.TexEnv = fxDDTexEnv;
diff --git a/src/mesa/drivers/glide/fxddtex.c b/src/mesa/drivers/glide/fxddtex.c
index 6f7c9252f3..25a41cac34 100644
--- a/src/mesa/drivers/glide/fxddtex.c
+++ b/src/mesa/drivers/glide/fxddtex.c
@@ -43,6 +43,7 @@
 #include "image.h"
 #include "teximage.h"
 #include "texformat.h"
+#include "texcompress.h"
 #include "texobj.h"
 #include "texstore.h"
 #include "texutil.h"
@@ -663,9 +664,6 @@ fxIsTexSupported(GLenum target, GLint internalFormat,
  * may get defined in texutil.c) but we have to account for scaled texture
  * images on tdfx hardware (the 8:1 aspect ratio limit).
  * Hence, we need special functions here.
- *
- * [dBorca]
- * this better be right, if we will advertise GL_SGIS_generate_mipmap!
  */
 
 static void
@@ -828,6 +826,84 @@ fetch_a8r8g8b8(const struct gl_texture_image *texImage,
 
 
 static void
+fetch_rgb_fxt1(const struct gl_texture_image *texImage,
+	       GLint i, GLint j, GLint k, GLchan *rgba)
+{
+    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
+
+    i = i * mml->wScale;
+    j = j * mml->hScale;
+
+    _mesa_texformat_rgb_fxt1.FetchTexel2D(texImage, i, j, k, rgba);
+}
+
+
+static void
+fetch_rgba_fxt1(const struct gl_texture_image *texImage,
+		GLint i, GLint j, GLint k, GLchan *rgba)
+{
+    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
+
+    i = i * mml->wScale;
+    j = j * mml->hScale;
+
+    _mesa_texformat_rgba_fxt1.FetchTexel2D(texImage, i, j, k, rgba);
+}
+
+
+static void
+fetch_rgb_dxt1(const struct gl_texture_image *texImage,
+	       GLint i, GLint j, GLint k, GLchan *rgba)
+{
+    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
+
+    i = i * mml->wScale;
+    j = j * mml->hScale;
+
+    _mesa_texformat_rgb_dxt1.FetchTexel2D(texImage, i, j, k, rgba);
+}
+
+
+static void
+fetch_rgba_dxt1(const struct gl_texture_image *texImage,
+		GLint i, GLint j, GLint k, GLchan *rgba)
+{
+    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
+
+    i = i * mml->wScale;
+    j = j * mml->hScale;
+
+    _mesa_texformat_rgba_dxt1.FetchTexel2D(texImage, i, j, k, rgba);
+}
+
+
+static void
+fetch_rgba_dxt3(const struct gl_texture_image *texImage,
+		GLint i, GLint j, GLint k, GLchan *rgba)
+{
+    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
+
+    i = i * mml->wScale;
+    j = j * mml->hScale;
+
+    _mesa_texformat_rgba_dxt3.FetchTexel2D(texImage, i, j, k, rgba);
+}
+
+
+static void
+fetch_rgba_dxt5(const struct gl_texture_image *texImage,
+		GLint i, GLint j, GLint k, GLchan *rgba)
+{
+    const tfxMipMapLevel *mml = FX_MIPMAP_DATA(texImage);
+
+    i = i * mml->wScale;
+    j = j * mml->hScale;
+
+    _mesa_texformat_rgba_dxt5.FetchTexel2D(texImage, i, j, k, rgba);
+}
+
+
+static void
 PrintTexture(int w, int h, int c, const GLubyte * data)
 {
    int i, j;
@@ -896,56 +972,15 @@ GLuint fxDDCompressedTextureSize (GLcontext *ctx,
  width *= wScale;
  height *= hScale;
 
+#if FX_TC_NAPALM || FX_TC_NCC
  switch (format) {
- case GL_COMPRESSED_RGB_FXT1_3DFX:
- case GL_COMPRESSED_RGBA_FXT1_3DFX:
-    /* round up width to next multiple of 8, height to next multiple of 4 */
-    width = (width + 7) & ~7;
-    height = (height + 3) & ~3;
-    /* 16 bytes per 8x4 tile of RGB[A] texels */
-    size = width * height / 2;
-    /* Textures smaller than 8x4 will effectively be made into 8x4 and
-     * take 16 bytes.
-     */
-    if (size < 16)
-       size = 16;
-    return size;
- case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
- case GL_RGB_S3TC:
- case GL_RGB4_S3TC:
-    /* round up width, height to next multiple of 4 */
-    width = (width + 3) & ~3;
-    height = (height + 3) & ~3;
-    /* 8 bytes per 4x4 tile of RGB[A] texels */
-    size = width * height / 2;
-    /* Textures smaller than 4x4 will effectively be made into 4x4 and
-     * take 8 bytes.
-     */
-    if (size < 8)
-       size = 8;
-    return size;
- case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
- case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
- case GL_RGBA_S3TC:
- case GL_RGBA4_S3TC:
-    /* round up width, height to next multiple of 4 */
-    width = (width + 3) & ~3;
-    height = (height + 3) & ~3;
-    /* 16 bytes per 4x4 tile of RGBA texels */
-    size = width * height; /* simple! */
-    /* Textures smaller than 4x4 will effectively be made into 4x4 and
-     * take 16 bytes.
-     */
-    if (size < 16)
-       size = 16;
-    return size;
  case GL_COMPRESSED_RGB:
 #if FX_TC_NAPALM
     {
      fxMesaContext fxMesa = FX_CONTEXT(ctx);
      if (fxMesa->type >= GR_SSTTYPE_Voodoo4) {
-        return fxDDCompressedTextureSize(ctx, width, height, 1, GL_COMPRESSED_RGB_FXT1_3DFX);
+        format = GL_COMPRESSED_RGB_FXT1_3DFX;
+        break;
      }
     }
 #endif
@@ -957,17 +992,22 @@ GLuint fxDDCompressedTextureSize (GLcontext *ctx,
     {
      fxMesaContext fxMesa = FX_CONTEXT(ctx);
      if (fxMesa->type >= GR_SSTTYPE_Voodoo4) {
-        return fxDDCompressedTextureSize(ctx, width, height, 1, GL_COMPRESSED_RGBA_FXT1_3DFX);
+        format = GL_COMPRESSED_RGBA_FXT1_3DFX;
+        break;
      }
     }
 #endif
 #if FX_TC_NCC
     return (width * height * 16 >> 3) + 12 * 4;
 #endif
- default:
-    _mesa_problem(ctx, "bad texformat in fxDDCompressedTextureSize");
-    return 0;
  }
+#endif
+
+ return _mesa_compressed_texture_size(ctx,
+                                      width,
+                                      height,
+                                      depth,
+                                      format);
 }
 
 
@@ -1170,12 +1210,17 @@ fxFetchFunction(GLint mesaFormat)
    case MESA_FORMAT_ARGB8888:
       return &fetch_a8r8g8b8;
    case MESA_FORMAT_RGB_FXT1:
+      return &fetch_rgb_fxt1;
    case MESA_FORMAT_RGBA_FXT1:
+      return &fetch_rgba_fxt1;
    case MESA_FORMAT_RGB_DXT1:
+      return &fetch_rgb_dxt1;
    case MESA_FORMAT_RGBA_DXT1:
+      return &fetch_rgba_dxt1;
    case MESA_FORMAT_RGBA_DXT3:
+      return &fetch_rgba_dxt3;
    case MESA_FORMAT_RGBA_DXT5:
-     return &fetch_r4g4b4a4;
+      return &fetch_rgba_dxt5;
    default:
       _mesa_problem(NULL, "Unexpected format in fxFetchFunction");
       return NULL;
diff --git a/src/mesa/main/texcompress_fxt1.c b/src/mesa/main/texcompress_fxt1.c
index f18f717fc6..98e9158074 100644
--- a/src/mesa/main/texcompress_fxt1.c
+++ b/src/mesa/main/texcompress_fxt1.c
@@ -40,28 +40,142 @@
 #include "texstore.h"
 
 
+GLint compress_fxt1 (GLcontext *ctx,
+                     GLint srcWidth,
+                     GLint srcHeight,
+                     GLenum srcFormat,
+                     const GLvoid *pixels,
+                     GLint srcRowStride,
+                     GLvoid *dst,
+                     GLint dstRowStride);
+
+
+/**
+ * Called during context initialization.
+ */
 void
 _mesa_init_texture_fxt1( GLcontext *ctx )
 {
-   /* called during context initialization */
 }
 
 
+/**
+ * Called via TexFormat->StoreImage to store an RGB_FXT1 texture.
+ */
 static GLboolean
 texstore_rgb_fxt1(STORE_PARAMS)
 {
-   /* XXX to do */
-   return GL_FALSE;
+   const GLchan *pixels;
+   GLint srcRowStride;
+   GLubyte *dst;
+   GLint texWidth;
+   const GLchan *tempImage = NULL;
+
+   dstRowStride = _mesa_compressed_row_stride(GL_COMPRESSED_RGB_FXT1_3DFX, srcWidth);
+   texWidth = dstRowStride * 8 / 16; /* a bit of a hack */
+
+   ASSERT(dstFormat == &_mesa_texformat_rgb_fxt1);
+   ASSERT(dstXoffset % 8 == 0);
+   ASSERT(dstYoffset % 4 == 0);
+   ASSERT(dstZoffset     == 0);
+
+   /* [dBorca]
+    * we still need to pass a 4byte/pixel texture to the codec
+    */
+   if (srcFormat != GL_RGB ||
+       srcType != CHAN_TYPE ||
+       ctx->_ImageTransferState ||
+       srcPacking->SwapBytes) {
+      /* convert image to RGB/GLchan */
+      tempImage = _mesa_make_temp_chan_image(ctx, dims,
+                                             baseInternalFormat,
+                                             /*dstFormat->BaseFormat*/GL_RGBA,
+                                             srcWidth, srcHeight, srcDepth,
+                                             srcFormat, srcType, srcAddr,
+                                             srcPacking);
+      if (!tempImage)
+         return GL_FALSE; /* out of memory */
+      _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
+      pixels = tempImage;
+      srcRowStride = /*3*/4 * srcWidth;
+      srcFormat = GL_RGB;
+   }
+   else {
+      pixels = (const GLchan *) srcAddr;
+      srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat,
+                                            srcType) / sizeof(GLchan);
+   }
+
+   dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0,
+                                        GL_COMPRESSED_RGB_FXT1_3DFX,
+                                        texWidth, dstAddr);
+
+   compress_fxt1(ctx, srcWidth, srcHeight, srcFormat, pixels, srcRowStride,
+                 dst, dstRowStride);
+
+   if (tempImage)
+      _mesa_free((void *) tempImage);
+
+   return GL_TRUE;
 }
 
 
+/**
+ * Called via TexFormat->StoreImage to store an RGBA_FXT1 texture.
+ */
 static GLboolean
 texstore_rgba_fxt1(STORE_PARAMS)
 {
-   /* XXX to do */
-   return GL_FALSE;
-}
+   const GLchan *pixels;
+   GLint srcRowStride;
+   GLubyte *dst;
+   GLint texWidth;
+   const GLchan *tempImage = NULL;
+
+   dstRowStride = _mesa_compressed_row_stride(GL_COMPRESSED_RGBA_FXT1_3DFX, srcWidth);
+   texWidth = dstRowStride * 8 / 16; /* a bit of a hack */
+
+   ASSERT(dstFormat == &_mesa_texformat_rgba_dxt1);
+   ASSERT(dstXoffset % 8 == 0);
+   ASSERT(dstYoffset % 4 == 0);
+   ASSERT(dstZoffset     == 0);
+
+   if (srcFormat != GL_RGBA ||
+       srcType != CHAN_TYPE ||
+       ctx->_ImageTransferState ||
+       srcPacking->SwapBytes) {
+      /* convert image to RGBA/GLchan */
+      tempImage = _mesa_make_temp_chan_image(ctx, dims,
+                                             baseInternalFormat,
+                                             dstFormat->BaseFormat,
+                                             srcWidth, srcHeight, srcDepth,
+                                             srcFormat, srcType, srcAddr,
+                                             srcPacking);
+      if (!tempImage)
+         return GL_FALSE; /* out of memory */
+      _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
+      pixels = tempImage;
+      srcRowStride = 4 * srcWidth;
+      srcFormat = GL_RGBA;
+   }
+   else {
+      pixels = (const GLchan *) srcAddr;
+      srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat,
+                                            srcType) / sizeof(GLchan);
+   }
 
+   dst = _mesa_compressed_image_address(dstXoffset, dstYoffset, 0,
+                                        GL_COMPRESSED_RGBA_FXT1_3DFX,
+                                        texWidth, dstAddr);
+
+   compress_fxt1(ctx, srcWidth, srcHeight, srcFormat, pixels, srcRowStride,
+                 dst, dstRowStride);
+
+   if (tempImage)
+      _mesa_free((void*) tempImage);
+
+   return GL_TRUE;
+}
 
 
 static void
@@ -153,3 +267,16 @@ const struct gl_texture_format _mesa_texformat_rgba_fxt1 = {
    NULL, /*impossible*/ 		/* FetchTexel3Df */
 };
 
+
+GLint compress_fxt1 (GLcontext *ctx,
+                     GLint srcWidth,
+                     GLint srcHeight,
+                     GLenum srcFormat,
+                     const GLvoid *pixels,
+                     GLint srcRowStride,
+                     GLvoid *dst,
+                     GLint dstRowStride)
+{
+   /* here be dragons */
+   return -1;
+}