+ /* Most GL state applies to glBitmap (like blending, stencil, etc),
+ * but a there's a few things we need to override:
+ */
+ _mesa_meta_begin(ctx, (META_ALPHA_TEST |
+ META_PIXEL_STORE |
+ META_RASTERIZATION |
+ META_SHADER |
+ META_TEXTURE |
+ META_TRANSFORM |
+ META_VERTEX |
+ META_VIEWPORT));
+
+ if (bitmap->ArrayObj == 0) {
+ /* one-time setup */
+
+ /* create vertex array object */
+ _mesa_GenVertexArraysAPPLE(1, &bitmap->ArrayObj);
+ _mesa_BindVertexArrayAPPLE(bitmap->ArrayObj);
+
+ /* create vertex array buffer */
+ _mesa_GenBuffersARB(1, &bitmap->VBO);
+ _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, bitmap->VBO);
+ _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+ NULL, GL_DYNAMIC_DRAW_ARB);
+
+ /* setup vertex arrays */
+ _mesa_VertexPointer(3, GL_FLOAT, sizeof(verts[0]),
+ (void *) (0 * sizeof(GLfloat)));
+ _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(verts[0]),
+ (void *) (3 * sizeof(GLfloat)));
+ _mesa_ColorPointer(4, GL_FLOAT, sizeof(verts[0]),
+ (void *) (5 * sizeof(GLfloat)));
+
+ _mesa_EnableClientState(GL_VERTEX_ARRAY);
+ _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+ _mesa_EnableClientState(GL_COLOR_ARRAY);
+ }
+ else {
+ _mesa_BindVertexArray(bitmap->ArrayObj);
+ _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, bitmap->VBO);
+ }
+
+ newTex = alloc_texture(tex, width, height, texIntFormat);
+
+ /* vertex positions, texcoords, colors (after texture allocation!) */
+ {
+ const GLfloat x0 = (GLfloat) x;
+ const GLfloat y0 = (GLfloat) y;
+ const GLfloat x1 = (GLfloat) (x + width);
+ const GLfloat y1 = (GLfloat) (y + height);
+ const GLfloat z = ctx->Current.RasterPos[2];
+ GLuint i;
+
+ verts[0][0] = x0;
+ verts[0][1] = y0;
+ verts[0][2] = z;
+ verts[0][3] = 0.0F;
+ verts[0][4] = 0.0F;
+ verts[1][0] = x1;
+ verts[1][1] = y0;
+ verts[1][2] = z;
+ verts[1][3] = tex->Sright;
+ verts[1][4] = 0.0F;
+ verts[2][0] = x1;
+ verts[2][1] = y1;
+ verts[2][2] = z;
+ verts[2][3] = tex->Sright;
+ verts[2][4] = tex->Ttop;
+ verts[3][0] = x0;
+ verts[3][1] = y1;
+ verts[3][2] = z;
+ verts[3][3] = 0.0F;
+ verts[3][4] = tex->Ttop;
+
+ for (i = 0; i < 4; i++) {
+ verts[i][5] = ctx->Current.RasterColor[0];
+ verts[i][6] = ctx->Current.RasterColor[1];
+ verts[i][7] = ctx->Current.RasterColor[2];
+ verts[i][8] = ctx->Current.RasterColor[3];
+ }
+
+ /* upload new vertex data */
+ _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ }
+
+ bitmap1 = _mesa_map_pbo_source(ctx, &unpackSave, bitmap1);
+ if (!bitmap1)
+ return;
+
+ bitmap8 = (GLubyte *) _mesa_calloc(width * height);
+ if (bitmap8) {
+ _mesa_expand_bitmap(width, height, &unpackSave, bitmap1,
+ bitmap8, width, 0xff);
+
+ _mesa_set_enable(ctx, tex->Target, GL_TRUE);
+
+ _mesa_set_enable(ctx, GL_ALPHA_TEST, GL_TRUE);
+ _mesa_AlphaFunc(GL_GREATER, 0.0);
+
+ setup_drawpix_texture(tex, newTex, texIntFormat, width, height,
+ GL_ALPHA, GL_UNSIGNED_BYTE, bitmap8);
+
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+ _mesa_set_enable(ctx, tex->Target, GL_FALSE);
+
+ _mesa_free(bitmap8);
+ }
+
+ _mesa_unmap_pbo_source(ctx, &unpackSave);
+
+ _mesa_meta_end(ctx);
+}
+
+
+void
+_mesa_meta_generate_mipmap(GLcontext *ctx, GLenum target,
+ struct gl_texture_object *texObj)
+{
+ struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;
+ struct { GLfloat x, y, s, t, r; } verts[4];
+ const GLuint baseLevel = texObj->BaseLevel;
+ const GLuint maxLevel = texObj->MaxLevel;
+ const GLenum minFilterSave = texObj->MinFilter;
+ const GLenum magFilterSave = texObj->MagFilter;
+ const GLuint fboSave = ctx->DrawBuffer->Name;
+ GLenum faceTarget;
+ GLuint level;
+ GLuint border = 0;
+
+ /* check for fallbacks */
+ if (!ctx->Extensions.EXT_framebuffer_object) {
+ _mesa_generate_mipmap(ctx, target, texObj);
+ return;
+ }
+
+ if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
+ target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) {
+ faceTarget = target;
+ target = GL_TEXTURE_CUBE_MAP;
+ }
+ else {
+ faceTarget = target;
+ }
+
+ _mesa_meta_begin(ctx, META_ALL);
+
+ if (mipmap->ArrayObj == 0) {
+ /* one-time setup */
+
+ /* create vertex array object */
+ _mesa_GenVertexArraysAPPLE(1, &mipmap->ArrayObj);
+ _mesa_BindVertexArrayAPPLE(mipmap->ArrayObj);
+
+ /* create vertex array buffer */
+ _mesa_GenBuffersARB(1, &mipmap->VBO);
+ _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, mipmap->VBO);
+ _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+ NULL, GL_DYNAMIC_DRAW_ARB);
+
+ /* setup vertex arrays */
+ _mesa_VertexPointer(2, GL_FLOAT, sizeof(verts[0]),
+ (void *) (0 * sizeof(GLfloat)));
+ _mesa_TexCoordPointer(3, GL_FLOAT, sizeof(verts[0]),
+ (void *) (2 * sizeof(GLfloat)));
+
+ _mesa_EnableClientState(GL_VERTEX_ARRAY);
+ _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+ }
+ else {
+ _mesa_BindVertexArray(mipmap->ArrayObj);
+ _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, mipmap->VBO);
+ }
+
+ if (!mipmap->FBO) {
+ /* Bind the new renderbuffer to the color attachment point. */
+ _mesa_GenFramebuffersEXT(1, &mipmap->FBO);
+ }
+
+ _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, mipmap->FBO);
+
+ _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ _mesa_set_enable(ctx, target, GL_TRUE);
+
+ /* setup texcoords once (XXX what about border?) */
+ switch (faceTarget) {
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+ break;
+ case GL_TEXTURE_2D:
+ verts[0].s = 0.0F;
+ verts[0].t = 0.0F;
+ verts[0].r = 0.0F;
+ verts[1].s = 1.0F;
+ verts[1].t = 0.0F;
+ verts[2].r = 0.0F;
+ verts[3].s = 1.0F;
+ verts[3].t = 1.0F;
+ verts[3].r = 0.0F;
+ verts[4].s = 0.0F;
+ verts[4].t = 1.0F;
+ verts[4].r = 0.0F;
+ break;
+ }
+
+
+ for (level = baseLevel + 1; level <= maxLevel; level++) {
+ const struct gl_texture_image *srcImage;
+ const GLuint srcLevel = level - 1;
+ GLsizei srcWidth, srcHeight;
+ GLsizei newWidth, newHeight;
+ GLenum status;
+
+ srcImage = _mesa_select_tex_image(ctx, texObj, target, srcLevel);
+ assert(srcImage->Border == 0); /* XXX we can fix this */
+
+ srcWidth = srcImage->Width - 2 * border;
+ srcHeight = srcImage->Height - 2 * border;
+
+ newWidth = MAX2(1, srcWidth / 2) + 2 * border;
+ newHeight = MAX2(1, srcHeight / 2) + 2 * border;
+
+ if (newWidth == srcImage->Width && newHeight == srcImage->Height) {
+ break;
+ }
+
+ /* Create empty image */
+ _mesa_TexImage2D(GL_TEXTURE_2D, level, srcImage->InternalFormat,
+ newWidth, newHeight, border,
+ GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+
+ /* vertex positions */
+ {
+ verts[0].x = 0.0F;
+ verts[0].y = 0.0F;
+ verts[1].x = (GLfloat) newWidth;
+ verts[1].y = 0.0F;
+ verts[2].x = (GLfloat) newWidth;
+ verts[2].y = (GLfloat) newHeight;
+ verts[3].x = 0.0F;
+ verts[3].y = (GLfloat) newHeight;
+
+ /* upload new vertex data */
+ _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ }
+
+ /* limit sampling to src level */
+ _mesa_TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, srcLevel);
+ _mesa_TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, srcLevel);
+
+ /* Set to draw into the current level */
+ _mesa_FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
+ GL_COLOR_ATTACHMENT0_EXT,
+ target,
+ texObj->Name,
+ level);
+
+ /* Choose to render to the color attachment. */
+ _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
+
+ status = _mesa_CheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
+ if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ abort();
+ break;
+ }
+
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ }