#include "main/macros.h"
#include "main/matrix.h"
#include "main/polygon.h"
+#include "main/readpix.h"
#include "main/scissor.h"
#include "main/shaders.h"
#include "main/stencil.h"
#include "main/varray.h"
#include "main/viewport.h"
#include "shader/program.h"
+#include "shader/arbprogram.h"
#include "swrast/swrast.h"
#include "drivers/common/meta.h"
/** META_FOG */
GLboolean Fog;
- /** META_PIXELSTORE */
- /* XXX / TO-DO */
+ /** META_PIXEL_STORE */
+ struct gl_pixelstore_attrib Pack, Unpack;
/** META_RASTERIZATION */
GLenum FrontPolygonMode, BackPolygonMode;
*/
struct blit_state
{
- GLuint TexObj;
- GLsizei TexWidth, TexHeight;
- GLenum TexType;
GLuint ArrayObj;
GLuint VBO;
- GLfloat verts[4][4]; /** four verts of X,Y,S,T */
+ GLuint DepthFP;
};
{
GLuint ArrayObj;
GLuint VBO;
- GLfloat verts[4][7]; /** four verts of X,Y,Z,R,G,B,A */
};
*/
struct copypix_state
{
- GLuint TexObj;
- GLsizei TexWidth, TexHeight;
- GLenum TexType;
GLuint ArrayObj;
GLuint VBO;
- GLfloat verts[4][5]; /** four verts of X,Y,Z,S,T */
};
*/
struct drawpix_state
{
- GLuint TexObj;
- GLsizei TexWidth, TexHeight;
- GLenum TexIntFormat;
GLuint ArrayObj;
GLuint VBO;
- GLfloat verts[4][5]; /** four verts of X,Y,Z,S,T */
+
+ GLuint StencilFP; /**< Fragment program for drawing stencil images */
+ GLuint DepthFP; /**< Fragment program for drawing depth images */
};
+/**
+ * Temporary texture used for glBlitFramebuffer, glDrawPixels, etc.
+ * This is currently shared by all the meta ops. But we could create a
+ * separate one for each of glDrawPixel, glBlitFramebuffer, glCopyPixels, etc.
+ */
+struct temp_texture
+{
+ GLuint TexObj;
+ GLenum Target; /**< GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE */
+ GLsizei MaxSize; /**< Max possible texture size */
+ GLboolean NPOT; /**< Non-power of two size OK? */
+ GLsizei Width, Height; /**< Current texture size */
+ GLenum IntFormat;
+ GLfloat Sright, Ttop; /**< right, top texcoords */
+};
+
/**
* All per-context meta state.
{
struct save_state Save; /**< state saved during meta-ops */
+ struct temp_texture TempTex;
+
struct blit_state Blit; /**< For _mesa_meta_blit_framebuffer() */
struct clear_state Clear; /**< For _mesa_meta_clear() */
struct copypix_state CopyPix; /**< For _mesa_meta_copy_pixels() */
struct drawpix_state DrawPix; /**< For _mesa_meta_draw_pixels() */
/* other possible meta-ops:
- * glDrawPixels()
* glBitmap()
* glGenerateMipmap()
*/
{
struct gl_meta_state *meta = ctx->Meta;
- if (meta->Blit.TexObj) {
- _mesa_DeleteTextures(1, &meta->Blit.TexObj);
+ if (_mesa_get_current_context()) {
+ /* if there's no current context, these textures, buffers, etc should
+ * still get freed by _mesa_free_context_data().
+ */
+
+ _mesa_DeleteTextures(1, &meta->TempTex.TexObj);
+
+ /* glBlitFramebuffer */
_mesa_DeleteBuffersARB(1, & meta->Blit.VBO);
_mesa_DeleteVertexArraysAPPLE(1, &meta->Blit.ArrayObj);
- }
+ _mesa_DeletePrograms(1, &meta->Blit.DepthFP);
- if (meta->Clear.VBO) {
+ /* glClear */
_mesa_DeleteBuffersARB(1, & meta->Clear.VBO);
_mesa_DeleteVertexArraysAPPLE(1, &meta->Clear.ArrayObj);
- }
- if (meta->CopyPix.TexObj) {
- _mesa_DeleteTextures(1, &meta->CopyPix.TexObj);
+ /* glCopyPixels */
_mesa_DeleteBuffersARB(1, & meta->CopyPix.VBO);
_mesa_DeleteVertexArraysAPPLE(1, &meta->CopyPix.ArrayObj);
- }
- if (meta->DrawPix.TexObj) {
- _mesa_DeleteTextures(1, &meta->DrawPix.TexObj);
+ /* glDrawPixels */
_mesa_DeleteBuffersARB(1, & meta->DrawPix.VBO);
_mesa_DeleteVertexArraysAPPLE(1, &meta->DrawPix.ArrayObj);
+ _mesa_DeletePrograms(1, &meta->DrawPix.DepthFP);
+ _mesa_DeletePrograms(1, &meta->DrawPix.StencilFP);
}
_mesa_free(ctx->Meta);
_mesa_set_enable(ctx, GL_FOG, GL_FALSE);
}
+ if (state & META_PIXEL_STORE) {
+ save->Pack = ctx->Pack;
+ save->Unpack = ctx->Unpack;
+ ctx->Pack = ctx->DefaultPacking;
+ ctx->Unpack = ctx->DefaultPacking;
+ }
+
if (state & META_RASTERIZATION) {
save->FrontPolygonMode = ctx->Polygon.FrontMode;
save->BackPolygonMode = ctx->Polygon.BackMode;
}
if (state & META_VIEWPORT) {
+ /* save viewport state */
save->ViewportX = ctx->Viewport.X;
save->ViewportY = ctx->Viewport.Y;
save->ViewportW = ctx->Viewport.Width;
save->ViewportH = ctx->Viewport.Height;
- _mesa_Viewport(0, 0, ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);
+ /* set viewport to match window size */
+ if (ctx->Viewport.X != 0 ||
+ ctx->Viewport.Y != 0 ||
+ ctx->Viewport.Width != ctx->DrawBuffer->Width ||
+ ctx->Viewport.Height != ctx->DrawBuffer->Height) {
+ _mesa_set_viewport(ctx, 0, 0,
+ ctx->DrawBuffer->Width, ctx->DrawBuffer->Height);
+ }
+ /* save depth range state */
save->DepthNear = ctx->Viewport.Near;
save->DepthFar = ctx->Viewport.Far;
+ /* set depth range to default */
_mesa_DepthRange(0.0, 1.0);
}
_mesa_set_enable(ctx, GL_FOG, save->Fog);
}
+ if (state & META_PIXEL_STORE) {
+ ctx->Pack = save->Pack;
+ ctx->Unpack = save->Unpack;
+ }
+
if (state & META_RASTERIZATION) {
_mesa_PolygonMode(GL_FRONT, save->FrontPolygonMode);
_mesa_PolygonMode(GL_BACK, save->BackPolygonMode);
}
if (state & META_VIEWPORT) {
- _mesa_Viewport(save->ViewportX, save->ViewportY,
- save->ViewportW, save->ViewportH);
+ if (save->ViewportX != ctx->Viewport.X ||
+ save->ViewportY != ctx->Viewport.Y ||
+ save->ViewportW != ctx->Viewport.Width ||
+ save->ViewportH != ctx->Viewport.Height) {
+ _mesa_set_viewport(ctx, save->ViewportX, save->ViewportY,
+ save->ViewportW, save->ViewportH);
+ }
_mesa_DepthRange(save->DepthNear, save->DepthFar);
}
}
+/**
+ * Return pointer to temp_texture info. This does some one-time init
+ * if needed.
+ */
+static struct temp_texture *
+get_temp_texture(GLcontext *ctx)
+{
+ struct temp_texture *tex = &ctx->Meta->TempTex;
+
+ if (!tex->TexObj) {
+ /* do one-time init */
+
+ /* prefer texture rectangle */
+ if (ctx->Extensions.NV_texture_rectangle) {
+ tex->Target = GL_TEXTURE_RECTANGLE;
+ tex->MaxSize = ctx->Const.MaxTextureRectSize;
+ tex->NPOT = GL_TRUE;
+ }
+ else {
+ /* use 2D texture, NPOT if possible */
+ tex->Target = GL_TEXTURE_2D;
+ tex->MaxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
+ tex->NPOT = ctx->Extensions.ARB_texture_non_power_of_two;
+ }
+ assert(tex->MaxSize > 0);
+
+ _mesa_GenTextures(1, &tex->TexObj);
+ _mesa_BindTexture(tex->Target, tex->TexObj);
+ }
+
+ return tex;
+}
+
+
+/**
+ * Compute the width/height of texture needed to draw an image of the
+ * given size. Return a flag indicating whether the current texture
+ * can be re-used (glTexSubImage2D) or if a new texture needs to be
+ * allocated (glTexImage2D).
+ * Also, compute s/t texcoords for drawing.
+ *
+ * \return GL_TRUE if new texture is needed, GL_FALSE otherwise
+ */
+static GLboolean
+alloc_texture(struct temp_texture *tex,
+ GLsizei width, GLsizei height, GLenum intFormat)
+{
+ GLboolean newTex = GL_FALSE;
+
+ if (width > tex->Width ||
+ height > tex->Height ||
+ intFormat != tex->IntFormat) {
+ /* alloc new texture (larger or different format) */
+
+ if (tex->NPOT) {
+ /* use non-power of two size */
+ tex->Width = width;
+ tex->Height = height;
+ }
+ else {
+ /* find power of two size */
+ GLsizei w, h;
+ w = h = 16;
+ while (w < width)
+ w *= 2;
+ while (h < height)
+ h *= 2;
+ tex->Width = w;
+ tex->Height = h;
+ }
+
+ tex->IntFormat = intFormat;
+
+ newTex = GL_TRUE;
+ }
+
+ /* compute texcoords */
+ if (tex->Target == GL_TEXTURE_RECTANGLE) {
+ tex->Sright = (GLfloat) width;
+ tex->Ttop = (GLfloat) height;
+ }
+ else {
+ tex->Sright = (GLfloat) width / tex->Width;
+ tex->Ttop = (GLfloat) height / tex->Height;
+ }
+
+ return newTex;
+}
+
+
+/**
+ * Setup/load texture for glCopyPixels or glBlitFramebuffer.
+ */
+static void
+setup_copypix_texture(struct temp_texture *tex,
+ GLboolean newTex,
+ GLint srcX, GLint srcY,
+ GLsizei width, GLsizei height, GLenum intFormat,
+ GLenum filter)
+{
+ _mesa_BindTexture(tex->Target, tex->TexObj);
+ _mesa_TexParameteri(tex->Target, GL_TEXTURE_MIN_FILTER, filter);
+ _mesa_TexParameteri(tex->Target, GL_TEXTURE_MAG_FILTER, filter);
+ _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+ /* copy framebuffer image to texture */
+ if (newTex) {
+ /* create new tex image */
+ if (tex->Width == width && tex->Height == height) {
+ /* create new tex with framebuffer data */
+ _mesa_CopyTexImage2D(tex->Target, 0, tex->IntFormat,
+ srcX, srcY, width, height, 0);
+ }
+ else {
+ /* create empty texture */
+ _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+ tex->Width, tex->Height, 0,
+ intFormat, GL_UNSIGNED_BYTE, NULL);
+ /* load image */
+ _mesa_CopyTexSubImage2D(tex->Target, 0,
+ 0, 0, srcX, srcY, width, height);
+ }
+ }
+ else {
+ /* replace existing tex image */
+ _mesa_CopyTexSubImage2D(tex->Target, 0,
+ 0, 0, srcX, srcY, width, height);
+ }
+}
+
+
+/**
+ * Setup/load texture for glDrawPixels.
+ */
+static void
+setup_drawpix_texture(struct temp_texture *tex,
+ GLboolean newTex,
+ GLenum texIntFormat,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const GLvoid *pixels)
+{
+ _mesa_BindTexture(tex->Target, tex->TexObj);
+ _mesa_TexParameteri(tex->Target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ _mesa_TexParameteri(tex->Target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+ /* copy pixel data to texture */
+ if (newTex) {
+ /* create new tex image */
+ if (tex->Width == width && tex->Height == height) {
+ /* create new tex and load image data */
+ _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+ tex->Width, tex->Height, 0, format, type, pixels);
+ }
+ else {
+ /* create empty texture */
+ _mesa_TexImage2D(tex->Target, 0, tex->IntFormat,
+ tex->Width, tex->Height, 0, format, type, NULL);
+ /* load image */
+ _mesa_TexSubImage2D(tex->Target, 0,
+ 0, 0, width, height, format, type, pixels);
+ }
+ }
+ else {
+ /* replace existing tex image */
+ _mesa_TexSubImage2D(tex->Target, 0,
+ 0, 0, width, height, format, type, pixels);
+ }
+}
+
+
+
+/**
+ * One-time init for drawing depth pixels.
+ */
+static void
+init_blit_depth_pixels(GLcontext *ctx)
+{
+ static const char *program =
+ "!!ARBfp1.0\n"
+ "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"
+ "END \n";
+ char program2[200];
+ struct blit_state *blit = &ctx->Meta->Blit;
+ struct temp_texture *tex = get_temp_texture(ctx);
+ const char *texTarget;
+
+ assert(blit->DepthFP == 0);
+
+ /* replace %s with "RECT" or "2D" */
+ assert(strlen(program) + 4 < sizeof(program2));
+ if (tex->Target == GL_TEXTURE_RECTANGLE)
+ texTarget = "RECT";
+ else
+ texTarget = "2D";
+ _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+ _mesa_GenPrograms(1, &blit->DepthFP);
+ _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
+ _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+ strlen(program2), (const GLubyte *) program2);
+}
+
+
/**
* Meta implementation of ctx->Driver.BlitFramebuffer() in terms
* of texture mapping and polygon rendering.
- * Note: this function requires GL_ARB_texture_rectangle support.
*/
void
_mesa_meta_blit_framebuffer(GLcontext *ctx,
GLbitfield mask, GLenum filter)
{
struct blit_state *blit = &ctx->Meta->Blit;
+ struct temp_texture *tex = get_temp_texture(ctx);
+ const GLsizei maxTexSize = tex->MaxSize;
const GLint srcX = MIN2(srcX0, srcX1);
const GLint srcY = MIN2(srcY0, srcY1);
const GLint srcW = abs(srcX1 - srcX0);
const GLint srcH = abs(srcY1 - srcY0);
- GLboolean srcFlipX = srcX1 < srcX0;
- GLboolean srcFlipY = srcY1 < srcY0;
+ const GLboolean srcFlipX = srcX1 < srcX0;
+ const GLboolean srcFlipY = srcY1 < srcY0;
+ GLfloat verts[4][4]; /* four verts of X,Y,S,T */
+ GLboolean newTex;
- ASSERT(ctx->Extensions.NV_texture_rectangle);
-
- if (srcW > ctx->Const.MaxTextureRectSize ||
- srcH > ctx->Const.MaxTextureRectSize) {
+ if (srcW > maxTexSize || srcH > maxTexSize) {
/* XXX avoid this fallback */
_swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1, mask, filter);
return;
}
-
if (srcFlipX) {
GLint tmp = dstX0;
dstX0 = dstX1;
/* only scissor effects blit so save/clear all other relevant state */
_mesa_meta_begin(ctx, ~META_SCISSOR);
- if (blit->TexObj == 0) {
- /* one-time setup */
-
- /* create texture object */
- _mesa_GenTextures(1, &blit->TexObj);
- _mesa_BindTexture(GL_TEXTURE_RECTANGLE, blit->TexObj);
- _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- }
- else {
- _mesa_BindTexture(GL_TEXTURE_RECTANGLE, blit->TexObj);
- }
-
- _mesa_TexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MIN_FILTER, filter);
- _mesa_TexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MAG_FILTER, filter);
-
if (blit->ArrayObj == 0) {
/* one-time setup */
/* create vertex array buffer */
_mesa_GenBuffersARB(1, &blit->VBO);
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);
- _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(blit->verts),
- blit->verts, GL_STREAM_DRAW_ARB);
+ _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+ NULL, GL_DYNAMIC_DRAW_ARB);
/* setup vertex arrays */
- _mesa_VertexPointer(2, GL_FLOAT, 4 * sizeof(GLfloat),
- (void*) (0 * sizeof(GLfloat)));
- _mesa_TexCoordPointer(2, GL_FLOAT, 4 * sizeof(GLfloat),
+ _mesa_VertexPointer(2, GL_FLOAT, sizeof(verts[0]),
+ (void *) (0 * sizeof(GLfloat)));
+ _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(verts[0]),
(void *) (2 * sizeof(GLfloat)));
_mesa_EnableClientState(GL_VERTEX_ARRAY);
_mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, blit->VBO);
}
- /* vertex positions */
- blit->verts[0][0] = (GLfloat) dstX0;
- blit->verts[0][1] = (GLfloat) dstY0;
- blit->verts[1][0] = (GLfloat) dstX1;
- blit->verts[1][1] = (GLfloat) dstY0;
- blit->verts[2][0] = (GLfloat) dstX1;
- blit->verts[2][1] = (GLfloat) dstY1;
- blit->verts[3][0] = (GLfloat) dstX0;
- blit->verts[3][1] = (GLfloat) dstY1;
-
- /* texcoords */
- blit->verts[0][2] = 0.0F;
- blit->verts[0][3] = 0.0F;
- blit->verts[1][2] = (GLfloat) srcW;
- blit->verts[1][3] = 0.0F;
- blit->verts[2][2] = (GLfloat) srcW;
- blit->verts[2][3] = (GLfloat) srcH;
- blit->verts[3][2] = 0.0F;
- blit->verts[3][3] = (GLfloat) srcH;
-
- /* upload new vertex data */
- _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0,
- sizeof(blit->verts), blit->verts);
+ newTex = alloc_texture(tex, srcW, srcH, GL_RGBA);
- /* copy framebuffer image to texture */
- if (mask & GL_COLOR_BUFFER_BIT) {
- if (blit->TexWidth == srcW &&
- blit->TexHeight == srcH &&
- blit->TexType == GL_RGBA) {
- /* replace existing tex image */
- _mesa_CopyTexSubImage2D(GL_TEXTURE_RECTANGLE, 0,
- 0, 0, srcX, srcY, srcW, srcH);
- }
- else {
- /* create new tex image */
- _mesa_CopyTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA,
- srcX, srcY, srcW, srcH, 0);
- blit->TexWidth = srcW;
- blit->TexHeight = srcH;
- blit->TexType = GL_RGBA;
- }
+ /* vertex positions/texcoords (after texture allocation!) */
+ {
+ verts[0][0] = (GLfloat) dstX0;
+ verts[0][1] = (GLfloat) dstY0;
+ verts[1][0] = (GLfloat) dstX1;
+ verts[1][1] = (GLfloat) dstY0;
+ verts[2][0] = (GLfloat) dstX1;
+ verts[2][1] = (GLfloat) dstY1;
+ verts[3][0] = (GLfloat) dstX0;
+ verts[3][1] = (GLfloat) dstY1;
+
+ verts[0][2] = 0.0F;
+ verts[0][3] = 0.0F;
+ verts[1][2] = tex->Sright;
+ verts[1][3] = 0.0F;
+ verts[2][2] = tex->Sright;
+ verts[2][3] = tex->Ttop;
+ verts[3][2] = 0.0F;
+ verts[3][3] = tex->Ttop;
+
+ /* upload new vertex data */
+ _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ }
+
+ _mesa_Enable(tex->Target);
+ if (mask & GL_COLOR_BUFFER_BIT) {
+ setup_copypix_texture(tex, newTex, srcX, srcY, srcW, srcH,
+ GL_RGBA, filter);
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
mask &= ~GL_COLOR_BUFFER_BIT;
}
- _mesa_Enable(GL_TEXTURE_RECTANGLE);
+ if (mask & GL_DEPTH_BUFFER_BIT) {
+ GLuint *tmp = (GLuint *) _mesa_malloc(srcW * srcH * sizeof(GLuint));
+ if (tmp) {
+ if (!blit->DepthFP)
+ init_blit_depth_pixels(ctx);
- /* draw textured quad */
- _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ /* maybe change tex format here */
+ newTex = alloc_texture(tex, srcW, srcH, GL_DEPTH_COMPONENT);
+
+ _mesa_ReadPixels(srcX, srcY, srcW, srcH,
+ GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp);
+
+ setup_drawpix_texture(tex, newTex, GL_DEPTH_COMPONENT, srcW, srcH,
+ GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, tmp);
+
+ _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
+ _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+ _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+ _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);
+ _mesa_DepthFunc(GL_ALWAYS);
+ _mesa_DepthMask(GL_TRUE);
- _mesa_Disable(GL_TEXTURE_RECTANGLE);
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ mask &= ~GL_DEPTH_BUFFER_BIT;
+
+ _mesa_free(tmp);
+ }
+ }
+
+ if (mask & GL_STENCIL_BUFFER_BIT) {
+ /* XXX can't easily do stencil */
+ }
+
+ _mesa_Disable(tex->Target);
_mesa_meta_end(ctx);
- /* XXX, TO-DO: try to handle these cases above! */
- if (mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) {
+ if (mask) {
_swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1, mask, filter);
}
_mesa_meta_clear(GLcontext *ctx, GLbitfield buffers)
{
struct clear_state *clear = &ctx->Meta->Clear;
- GLfloat z = 1.0 - 2.0 * ctx->Depth.Clear;
- GLuint i;
+ GLfloat verts[4][7]; /* four verts of X,Y,Z,R,G,B,A */
+ /* save all state but scissor, pixel pack/unpack */
+ GLbitfield metaSave = META_ALL - META_SCISSOR - META_PIXEL_STORE;
- /* only scissor and color mask effects clearing */
- _mesa_meta_begin(ctx, ~(META_SCISSOR | META_COLOR_MASK));
+ if (buffers & BUFFER_BITS_COLOR) {
+ /* if clearing color buffers, don't save/restore colormask */
+ metaSave -= META_COLOR_MASK;
+ }
+
+ _mesa_meta_begin(ctx, metaSave);
if (clear->ArrayObj == 0) {
/* one-time setup */
/* create vertex array buffer */
_mesa_GenBuffersARB(1, &clear->VBO);
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, clear->VBO);
- _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(clear->verts),
- clear->verts, GL_STREAM_DRAW_ARB);
+ _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+ NULL, GL_DYNAMIC_DRAW_ARB);
/* setup vertex arrays */
- _mesa_VertexPointer(3, GL_FLOAT, 7 * sizeof(GLfloat), (void *) 0);
- _mesa_ColorPointer(4, GL_FLOAT, 7 * sizeof(GLfloat),
+ _mesa_VertexPointer(3, GL_FLOAT, sizeof(verts[0]),
+ (void *) (0 * sizeof(GLfloat)));
+ _mesa_ColorPointer(4, GL_FLOAT, sizeof(verts[0]),
(void *) (3 * sizeof(GLfloat)));
_mesa_EnableClientState(GL_VERTEX_ARRAY);
_mesa_EnableClientState(GL_COLOR_ARRAY);
/* leave colormask, glDrawBuffer state as-is */
}
else {
+ ASSERT(metaSave & META_COLOR_MASK);
_mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
}
assert(!ctx->Stencil.Enabled);
}
- /* vertex positions */
- clear->verts[0][0] = (GLfloat) ctx->DrawBuffer->_Xmin;
- clear->verts[0][1] = (GLfloat) ctx->DrawBuffer->_Ymin;
- clear->verts[0][2] = z;
- clear->verts[1][0] = (GLfloat) ctx->DrawBuffer->_Xmax;
- clear->verts[1][1] = (GLfloat) ctx->DrawBuffer->_Ymin;
- clear->verts[1][2] = z;
- clear->verts[2][0] = (GLfloat) ctx->DrawBuffer->_Xmax;
- clear->verts[2][1] = (GLfloat) ctx->DrawBuffer->_Ymax;
- clear->verts[2][2] = z;
- clear->verts[3][0] = (GLfloat) ctx->DrawBuffer->_Xmin;
- clear->verts[3][1] = (GLfloat) ctx->DrawBuffer->_Ymax;
- clear->verts[3][2] = z;
+ /* vertex positions/colors */
+ {
+ const GLfloat x0 = (GLfloat) ctx->DrawBuffer->_Xmin;
+ const GLfloat y0 = (GLfloat) ctx->DrawBuffer->_Ymin;
+ const GLfloat x1 = (GLfloat) ctx->DrawBuffer->_Xmax;
+ const GLfloat y1 = (GLfloat) ctx->DrawBuffer->_Ymax;
+ const GLfloat z = 1.0 - 2.0 * ctx->Depth.Clear;
+ GLuint i;
+
+ verts[0][0] = x0;
+ verts[0][1] = y0;
+ verts[0][2] = z;
+ verts[1][0] = x1;
+ verts[1][1] = y0;
+ verts[1][2] = z;
+ verts[2][0] = x1;
+ verts[2][1] = y1;
+ verts[2][2] = z;
+ verts[3][0] = x0;
+ verts[3][1] = y1;
+ verts[3][2] = z;
+
+ /* vertex colors */
+ for (i = 0; i < 4; i++) {
+ COPY_4FV(&verts[i][3], ctx->Color.ClearColor);
+ }
- /* vertex colors */
- for (i = 0; i < 4; i++) {
- COPY_4FV(&clear->verts[i][3], ctx->Color.ClearColor);
+ /* upload new vertex data */
+ _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
}
- /* upload new vertex data */
- _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0,
- sizeof(clear->verts), clear->verts);
-
/* draw quad */
_mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
/**
* Meta implementation of ctx->Driver.CopyPixels() in terms
* of texture mapping and polygon rendering.
- * Note: this function requires GL_ARB_texture_rectangle support.
*/
void
_mesa_meta_copy_pixels(GLcontext *ctx, GLint srcX, GLint srcY,
GLsizei width, GLsizei height,
GLint dstX, GLint dstY, GLenum type)
{
- const GLenum filter = GL_NEAREST;
struct copypix_state *copypix = &ctx->Meta->CopyPix;
- const GLfloat z = ctx->Current.RasterPos[2];
- const GLfloat dstX1 = dstX + width * ctx->Pixel.ZoomX;
- const GLfloat dstY1 = dstY + height * ctx->Pixel.ZoomY;
-
- ASSERT(ctx->Extensions.NV_texture_rectangle);
+ struct temp_texture *tex = get_temp_texture(ctx);
+ GLfloat verts[4][5]; /* four verts of X,Y,Z,S,T */
+ GLboolean newTex;
+ GLenum intFormat = GL_RGBA;
if (type != GL_COLOR ||
ctx->_ImageTransferState ||
ctx->Fog.Enabled ||
- width > ctx->Const.MaxTextureRectSize ||
- height > ctx->Const.MaxTextureRectSize) {
+ width > tex->MaxSize ||
+ height > tex->MaxSize) {
/* XXX avoid this fallback */
_swrast_CopyPixels(ctx, srcX, srcY, width, height, dstX, dstY, type);
return;
META_VERTEX |
META_VIEWPORT));
- if (copypix->TexObj == 0) {
- /* one-time setup */
-
- /* create texture object */
- _mesa_GenTextures(1, ©pix->TexObj);
- _mesa_BindTexture(GL_TEXTURE_RECTANGLE, copypix->TexObj);
- _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- _mesa_TexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MIN_FILTER, filter);
- _mesa_TexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MAG_FILTER, filter);
- }
- else {
- _mesa_BindTexture(GL_TEXTURE_RECTANGLE, copypix->TexObj);
- }
-
if (copypix->ArrayObj == 0) {
/* one-time setup */
/* create vertex array buffer */
_mesa_GenBuffersARB(1, ©pix->VBO);
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, copypix->VBO);
- _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(copypix->verts),
- copypix->verts, GL_STREAM_DRAW_ARB);
+ _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+ NULL, GL_DYNAMIC_DRAW_ARB);
/* setup vertex arrays */
- _mesa_VertexPointer(3, GL_FLOAT, sizeof(copypix->verts[0]),
- (void*) (0 * sizeof(GLfloat)));
- _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(copypix->verts[0]),
+ _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_EnableClientState(GL_VERTEX_ARRAY);
_mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, copypix->VBO);
}
- /* vertex positions, texcoords */
- copypix->verts[0][0] = (GLfloat) dstX;
- copypix->verts[0][1] = (GLfloat) dstY;
- copypix->verts[0][2] = z;
- copypix->verts[0][3] = 0.0F;
- copypix->verts[0][4] = 0.0F;
- copypix->verts[1][0] = (GLfloat) dstX1;
- copypix->verts[1][1] = (GLfloat) dstY;
- copypix->verts[1][2] = z;
- copypix->verts[1][3] = (GLfloat) width;
- copypix->verts[1][4] = 0.0F;
- copypix->verts[2][0] = (GLfloat) dstX1;
- copypix->verts[2][1] = (GLfloat) dstY1;
- copypix->verts[2][2] = z;
- copypix->verts[2][3] = (GLfloat) width;
- copypix->verts[2][4] = (GLfloat) height;
- copypix->verts[3][0] = (GLfloat) dstX;
- copypix->verts[3][1] = (GLfloat) dstY1;
- copypix->verts[3][2] = z;
- copypix->verts[3][3] = 0.0F;
- copypix->verts[3][4] = (GLfloat) height;
-
- /* upload new vertex data */
- _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0,
- sizeof(copypix->verts), copypix->verts);
-
- /* copy framebuffer image to texture */
- if (type == GL_COLOR) {
- if (copypix->TexWidth == width &&
- copypix->TexHeight == height &&
- copypix->TexType == type) {
- /* replace existing tex image */
- _mesa_CopyTexSubImage2D(GL_TEXTURE_RECTANGLE, 0,
- 0, 0, srcX, srcY, width, height);
- }
- else {
- /* create new tex image */
- _mesa_CopyTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA,
- srcX, srcY, width, height, 0);
- copypix->TexWidth = width;
- copypix->TexHeight = height;
- copypix->TexType = type;
- }
- }
- else if (type == GL_DEPTH) {
- /* TO-DO: Use a GL_DEPTH_COMPONENT texture and a fragment program/shader
- * that replaces the fragment.z value.
- */
- }
- else {
- ASSERT(type == GL_STENCIL);
- /* have to use sw fallback */
- }
+ newTex = alloc_texture(tex, width, height, intFormat);
- _mesa_Enable(GL_TEXTURE_RECTANGLE);
+ /* vertex positions, texcoords (after texture allocation!) */
+ {
+ const GLfloat dstX0 = (GLfloat) dstX;
+ const GLfloat dstY0 = (GLfloat) dstY;
+ const GLfloat dstX1 = dstX + width * ctx->Pixel.ZoomX;
+ const GLfloat dstY1 = dstY + height * ctx->Pixel.ZoomY;
+ const GLfloat z = ctx->Current.RasterPos[2];
+
+ verts[0][0] = dstX0;
+ verts[0][1] = dstY0;
+ verts[0][2] = z;
+ verts[0][3] = 0.0F;
+ verts[0][4] = 0.0F;
+ verts[1][0] = dstX1;
+ verts[1][1] = dstY0;
+ verts[1][2] = z;
+ verts[1][3] = tex->Sright;
+ verts[1][4] = 0.0F;
+ verts[2][0] = dstX1;
+ verts[2][1] = dstY1;
+ verts[2][2] = z;
+ verts[2][3] = tex->Sright;
+ verts[2][4] = tex->Ttop;
+ verts[3][0] = dstX0;
+ verts[3][1] = dstY1;
+ verts[3][2] = z;
+ verts[3][3] = 0.0F;
+ verts[3][4] = tex->Ttop;
+
+ /* upload new vertex data */
+ _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ }
+
+ /* Alloc/setup texture */
+ setup_copypix_texture(tex, newTex, srcX, srcY, width, height,
+ GL_RGBA, GL_NEAREST);
+
+ _mesa_Enable(tex->Target);
/* draw textured quad */
_mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
- _mesa_Disable(GL_TEXTURE_RECTANGLE);
+ _mesa_Disable(tex->Target);
_mesa_meta_end(ctx);
}
*/
static void
tiled_draw_pixels(GLcontext *ctx,
+ GLint tileSize,
GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
{
- const GLint maxSize = ctx->Const.MaxTextureRectSize;
struct gl_pixelstore_attrib tileUnpack = *unpack;
GLint i, j;
- for (i = 0; i < width; i += maxSize) {
- const GLint tileWidth = MIN2(maxSize, width - i);
+ if (tileUnpack.RowLength == 0)
+ tileUnpack.RowLength = width;
+
+ for (i = 0; i < width; i += tileSize) {
+ const GLint tileWidth = MIN2(tileSize, width - i);
const GLint tileX = (GLint) (x + i * ctx->Pixel.ZoomX);
tileUnpack.SkipPixels = unpack->SkipPixels + i;
- for (j = 0; j < height; j += maxSize) {
- const GLint tileHeight = MIN2(maxSize, height - j);
+ for (j = 0; j < height; j += tileSize) {
+ const GLint tileHeight = MIN2(tileSize, height - j);
const GLint tileY = (GLint) (y + j * ctx->Pixel.ZoomY);
tileUnpack.SkipRows = unpack->SkipRows + j;
}
+/**
+ * One-time init for drawing stencil pixels.
+ */
+static void
+init_draw_stencil_pixels(GLcontext *ctx)
+{
+ /* This program is run eight times, once for each stencil bit.
+ * The stencil values to draw are found in an 8-bit alpha texture.
+ * We read the texture/stencil value and test if bit 'b' is set.
+ * If the bit is not set, use KIL to kill the fragment.
+ * Finally, we use the stencil test to update the stencil buffer.
+ *
+ * The basic algorithm for checking if a bit is set is:
+ * if (is_odd(value / (1 << bit)))
+ * result is one (or non-zero).
+ * else
+ * result is zero.
+ * The program parameter contains three values:
+ * parm.x = 255 / (1 << bit)
+ * parm.y = 0.5
+ * parm.z = 0.0
+ */
+ static const char *program =
+ "!!ARBfp1.0\n"
+ "PARAM parm = program.local[0]; \n"
+ "TEMP t; \n"
+ "TEX t, fragment.texcoord[0], texture[0], %s; \n" /* NOTE %s here! */
+ "# t = t * 255 / bit \n"
+ "MUL t.x, t.a, parm.x; \n"
+ "# t = (int) t \n"
+ "FRC t.y, t.x; \n"
+ "SUB t.x, t.x, t.y; \n"
+ "# t = t * 0.5 \n"
+ "MUL t.x, t.x, parm.y; \n"
+ "# t = fract(t.x) \n"
+ "FRC t.x, t.x; # if t.x != 0, then the bit is set \n"
+ "# t.x = (t.x == 0 ? 1 : 0) \n"
+ "SGE t.x, -t.x, parm.z; \n"
+ "KIL -t.x; \n"
+ "# for debug only \n"
+ "#MOV result.color, t.x; \n"
+ "END \n";
+ char program2[1000];
+ struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
+ struct temp_texture *tex = get_temp_texture(ctx);
+ const char *texTarget;
+
+ assert(drawpix->StencilFP == 0);
+
+ /* replace %s with "RECT" or "2D" */
+ assert(strlen(program) + 4 < sizeof(program2));
+ if (tex->Target == GL_TEXTURE_RECTANGLE)
+ texTarget = "RECT";
+ else
+ texTarget = "2D";
+ _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+ _mesa_GenPrograms(1, &drawpix->StencilFP);
+ _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP);
+ _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+ strlen(program2), (const GLubyte *) program2);
+}
+
+
+/**
+ * One-time init for drawing depth pixels.
+ */
+static void
+init_draw_depth_pixels(GLcontext *ctx)
+{
+ static const char *program =
+ "!!ARBfp1.0\n"
+ "PARAM color = program.local[0]; \n"
+ "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"
+ "MOV result.color, color; \n"
+ "END \n";
+ char program2[200];
+ struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
+ struct temp_texture *tex = get_temp_texture(ctx);
+ const char *texTarget;
+
+ assert(drawpix->DepthFP == 0);
+
+ /* replace %s with "RECT" or "2D" */
+ assert(strlen(program) + 4 < sizeof(program2));
+ if (tex->Target == GL_TEXTURE_RECTANGLE)
+ texTarget = "RECT";
+ else
+ texTarget = "2D";
+ _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+ _mesa_GenPrograms(1, &drawpix->DepthFP);
+ _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->DepthFP);
+ _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+ strlen(program2), (const GLubyte *) program2);
+}
+
+
/**
* Meta implementation of ctx->Driver.DrawPixels() in terms
* of texture mapping and polygon rendering.
- * Note: this function requires GL_ARB_texture_rectangle support.
*/
void
_mesa_meta_draw_pixels(GLcontext *ctx,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
{
- const GLenum filter = GL_NEAREST;
struct drawpix_state *drawpix = &ctx->Meta->DrawPix;
- const GLfloat z = ctx->Current.RasterPos[2];
- const GLfloat x1 = x + width * ctx->Pixel.ZoomX;
- const GLfloat y1 = y + height * ctx->Pixel.ZoomY;
+ struct temp_texture *tex = get_temp_texture(ctx);
const struct gl_pixelstore_attrib unpackSave = ctx->Unpack;
+ const GLuint origStencilMask = ctx->Stencil.WriteMask[0];
+ GLfloat verts[4][5]; /* four verts of X,Y,Z,S,T */
GLenum texIntFormat;
- GLboolean fallback;
-
- ASSERT(ctx->Extensions.NV_texture_rectangle);
+ GLboolean fallback, newTex;
+ GLbitfield metaExtraSave = 0x0;
/*
* Determine if we can do the glDrawPixels with texture mapping.
}
if (_mesa_is_color_format(format)) {
- texIntFormat = GL_RGBA;
+ /* use more compact format when possible */
+ /* XXX disable special case for GL_LUMINANCE for now to work around
+ * apparent i965 driver bug (see bug #23670).
+ */
+ if (/*format == GL_LUMINANCE ||*/ format == GL_LUMINANCE_ALPHA)
+ texIntFormat = format;
+ else
+ texIntFormat = GL_RGBA;
+ }
+ else if (_mesa_is_stencil_format(format)) {
+ if (ctx->Extensions.ARB_fragment_program &&
+ type == GL_UNSIGNED_BYTE) {
+ /* We'll store stencil as alpha. This only works for GLubyte
+ * image data because of how incoming values are mapped to alpha
+ * in [0,1].
+ */
+ texIntFormat = GL_ALPHA;
+ metaExtraSave = (META_COLOR_MASK |
+ META_DEPTH_TEST |
+ META_SHADER |
+ META_STENCIL_TEST);
+ }
+ else {
+ fallback = GL_TRUE;
+ }
+ }
+ else if (_mesa_is_depth_format(format)) {
+ if (ctx->Extensions.ARB_depth_texture &&
+ ctx->Extensions.ARB_fragment_program) {
+ texIntFormat = GL_DEPTH_COMPONENT;
+ metaExtraSave = (META_SHADER);
+ }
+ else {
+ fallback = GL_TRUE;
+ }
}
else {
fallback = GL_TRUE;
/*
* Check image size against max texture size, draw as tiles if needed.
*/
- if (width > ctx->Const.MaxTextureRectSize ||
- height > ctx->Const.MaxTextureRectSize) {
- tiled_draw_pixels(ctx, x, y, width, height,
+ if (width > tex->MaxSize || height > tex->MaxSize) {
+ tiled_draw_pixels(ctx, tex->MaxSize, x, y, width, height,
format, type, unpack, pixels);
return;
}
- /* Most GL state applies to glDrawPixels, but a there's a few things
- * we need to override:
+ /* Most GL state applies to glDrawPixels (like blending, stencil, etc),
+ * but a there's a few things we need to override:
*/
_mesa_meta_begin(ctx, (META_RASTERIZATION |
META_SHADER |
META_TEXTURE |
META_TRANSFORM |
META_VERTEX |
- META_VIEWPORT));
-
- if (drawpix->TexObj == 0) {
- /* one-time setup */
-
- /* create texture object */
- _mesa_GenTextures(1, &drawpix->TexObj);
- _mesa_BindTexture(GL_TEXTURE_RECTANGLE, drawpix->TexObj);
- _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- _mesa_TexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MIN_FILTER, filter);
- _mesa_TexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MAG_FILTER, filter);
- }
- else {
- _mesa_BindTexture(GL_TEXTURE_RECTANGLE, drawpix->TexObj);
- }
+ META_VIEWPORT |
+ metaExtraSave));
if (drawpix->ArrayObj == 0) {
/* one-time setup */
/* create vertex array buffer */
_mesa_GenBuffersARB(1, &drawpix->VBO);
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, drawpix->VBO);
- _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(drawpix->verts),
- drawpix->verts, GL_STREAM_DRAW_ARB);
+ _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+ NULL, GL_DYNAMIC_DRAW_ARB);
/* setup vertex arrays */
- _mesa_VertexPointer(3, GL_FLOAT, sizeof(drawpix->verts[0]),
- (void*) (0 * sizeof(GLfloat)));
- _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(drawpix->verts[0]),
+ _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_EnableClientState(GL_VERTEX_ARRAY);
_mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
_mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB, drawpix->VBO);
}
- /* vertex positions, texcoords */
- drawpix->verts[0][0] = (GLfloat) x;
- drawpix->verts[0][1] = (GLfloat) y;
- drawpix->verts[0][2] = z;
- drawpix->verts[0][3] = 0.0F;
- drawpix->verts[0][4] = 0.0F;
- drawpix->verts[1][0] = (GLfloat) x1;
- drawpix->verts[1][1] = (GLfloat) y;
- drawpix->verts[1][2] = z;
- drawpix->verts[1][3] = (GLfloat) width;
- drawpix->verts[1][4] = 0.0F;
- drawpix->verts[2][0] = (GLfloat) x1;
- drawpix->verts[2][1] = (GLfloat) y1;
- drawpix->verts[2][2] = z;
- drawpix->verts[2][3] = (GLfloat) width;
- drawpix->verts[2][4] = (GLfloat) height;
- drawpix->verts[3][0] = (GLfloat) x;
- drawpix->verts[3][1] = (GLfloat) y1;
- drawpix->verts[3][2] = z;
- drawpix->verts[3][3] = 0.0F;
- drawpix->verts[3][4] = (GLfloat) height;
-
- /* upload new vertex data */
- _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0,
- sizeof(drawpix->verts), drawpix->verts);
+ newTex = alloc_texture(tex, width, height, texIntFormat);
+
+ /* vertex positions, texcoords (after texture allocation!) */
+ {
+ const GLfloat x0 = (GLfloat) x;
+ const GLfloat y0 = (GLfloat) y;
+ const GLfloat x1 = x + width * ctx->Pixel.ZoomX;
+ const GLfloat y1 = y + height * ctx->Pixel.ZoomY;
+ const GLfloat z = ctx->Current.RasterPos[2];
+
+ 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;
+
+ /* upload new vertex data */
+ _mesa_BufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ }
/* set given unpack params */
- ctx->Unpack = *unpack; /* XXX bufobj */
+ ctx->Unpack = *unpack;
- /* copy pixel data to texture */
- if (drawpix->TexWidth == width &&
- drawpix->TexHeight == height &&
- drawpix->TexIntFormat == texIntFormat) {
- /* replace existing tex image */
- _mesa_TexSubImage2D(GL_TEXTURE_RECTANGLE, 0,
- 0, 0, width, height, format, type, pixels);
- }
- else {
- /* create new tex image */
- _mesa_TexImage2D(GL_TEXTURE_RECTANGLE, 0, texIntFormat,
- width, height, 0, format, type, pixels);
- drawpix->TexWidth = width;
- drawpix->TexHeight = height;
- drawpix->TexIntFormat = texIntFormat;
+ _mesa_Enable(tex->Target);
+
+ if (_mesa_is_stencil_format(format)) {
+ /* Drawing stencil */
+ GLint bit;
+
+ if (!drawpix->StencilFP)
+ init_draw_stencil_pixels(ctx);
+
+ setup_drawpix_texture(tex, newTex, texIntFormat, width, height,
+ GL_ALPHA, type, pixels);
+
+ _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+
+ _mesa_set_enable(ctx, GL_STENCIL_TEST, GL_TRUE);
+ _mesa_StencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
+
+ _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->StencilFP);
+ _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+
+ for (bit = 0; bit < ctx->Visual.stencilBits; bit++) {
+ const GLuint mask = 1 << bit;
+ if (mask & origStencilMask) {
+ _mesa_StencilFunc(GL_ALWAYS, mask, mask);
+ _mesa_StencilMask(mask);
+
+ _mesa_ProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB, 0,
+ 255.0 / mask, 0.5, 0.0, 0.0);
+
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ }
+ }
}
+ else if (_mesa_is_depth_format(format)) {
+ /* Drawing depth */
+ if (!drawpix->DepthFP)
+ init_draw_depth_pixels(ctx);
- /* restore unpack params */
- ctx->Unpack = unpackSave; /* XXX bufobj */
+ _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, drawpix->DepthFP);
+ _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
- _mesa_Enable(GL_TEXTURE_RECTANGLE);
+ /* polygon color = current raster color */
+ _mesa_ProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 0,
+ ctx->Current.RasterColor);
- /* draw textured quad */
- _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ setup_drawpix_texture(tex, newTex, texIntFormat, width, height,
+ format, type, pixels);
- _mesa_Disable(GL_TEXTURE_RECTANGLE);
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ }
+ else {
+ /* Drawing RGBA */
+ setup_drawpix_texture(tex, newTex, texIntFormat, width, height,
+ format, type, pixels);
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ }
+
+ _mesa_Disable(tex->Target);
+
+ /* restore unpack params */
+ ctx->Unpack = unpackSave;
_mesa_meta_end(ctx);
}
projects / mesa.git / blobdiff