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authorBrian Paul <brian.paul@tungstengraphics.com>2001-06-18 17:26:08 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2001-06-18 17:26:08 +0000
commit1b258989462e907e45abbdf8743b0a75f22c02b3 (patch)
treeaaf3847b0189aa370616fbd571a1650d13f1d145 /src/mesa/main/drawpix.c
parent24ae7c4c1f18c3086a779a2ee8f480ee5f4e7612 (diff)
Consolidated source files. Since the re-org a number of source files
only had one or two functions left in them.
Diffstat (limited to 'src/mesa/main/drawpix.c')
-rw-r--r--src/mesa/main/drawpix.c133
1 files changed, 132 insertions, 1 deletions
diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c
index e51f8369a1..963eb06b44 100644
--- a/src/mesa/main/drawpix.c
+++ b/src/mesa/main/drawpix.c
@@ -1,4 +1,4 @@
-/* $Id: drawpix.c,v 1.53 2001/04/28 08:39:17 keithw Exp $ */
+/* $Id: drawpix.c,v 1.54 2001/06/18 17:26:08 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -95,3 +95,134 @@ _mesa_DrawPixels( GLsizei width, GLsizei height,
}
}
}
+
+
+
+void
+_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
+ GLenum format, GLenum type, GLvoid *pixels )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (!pixels) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glReadPixels(pixels)" );
+ return;
+ }
+
+ if (ctx->NewState)
+ _mesa_update_state(ctx);
+
+ ctx->Driver.ReadPixels(ctx, x, y, width, height,
+ format, type, &ctx->Pack, pixels);
+
+}
+
+
+
+void
+_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
+ GLenum type )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLint destx, desty;
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (width < 0 || height < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glCopyPixels" );
+ return;
+ }
+
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
+
+ if (ctx->RenderMode==GL_RENDER) {
+ /* Destination of copy: */
+ if (!ctx->Current.RasterPosValid) {
+ return;
+ }
+ destx = IROUND(ctx->Current.RasterPos[0]);
+ desty = IROUND(ctx->Current.RasterPos[1]);
+
+ ctx->OcclusionResult = GL_TRUE;
+
+ ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
+ type );
+ }
+ else if (ctx->RenderMode == GL_FEEDBACK) {
+ FLUSH_CURRENT( ctx, 0 );
+ FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
+ _mesa_feedback_vertex( ctx,
+ ctx->Current.RasterPos,
+ ctx->Current.Color,
+ ctx->Current.Index,
+ ctx->Current.Texcoord[0] );
+ }
+ else if (ctx->RenderMode == GL_SELECT) {
+ _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+ }
+}
+
+
+
+void
+_mesa_Bitmap( GLsizei width, GLsizei height,
+ GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
+ const GLubyte *bitmap )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+
+ /* Error checking */
+ if (width < 0 || height < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap" );
+ return;
+ }
+
+ if (ctx->Current.RasterPosValid == GL_FALSE) {
+ return; /* do nothing */
+ }
+
+ if (ctx->RenderMode==GL_RENDER) {
+ if (bitmap) {
+ GLint x = (GLint) ( (ctx->Current.RasterPos[0] - xorig) + 0.0F );
+ GLint y = (GLint) ( (ctx->Current.RasterPos[1] - yorig) + 0.0F );
+
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
+
+ ctx->OcclusionResult = GL_TRUE;
+ ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
+ }
+ }
+ else if (ctx->RenderMode==GL_FEEDBACK) {
+ GLfloat color[4], texcoord[4], invq;
+
+ color[0] = ctx->Current.RasterColor[0];
+ color[1] = ctx->Current.RasterColor[1];
+ color[2] = ctx->Current.RasterColor[2];
+ color[3] = ctx->Current.RasterColor[3];
+ if (ctx->Current.Texcoord[0][3] == 0.0)
+ invq = 1.0F;
+ else
+ invq = 1.0F / ctx->Current.RasterTexCoord[3];
+ texcoord[0] = ctx->Current.RasterTexCoord[0] * invq;
+ texcoord[1] = ctx->Current.RasterTexCoord[1] * invq;
+ texcoord[2] = ctx->Current.RasterTexCoord[2] * invq;
+ texcoord[3] = ctx->Current.RasterTexCoord[3];
+ FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
+ _mesa_feedback_vertex( ctx,
+ ctx->Current.RasterPos,
+ color, ctx->Current.RasterIndex, texcoord );
+ }
+ else if (ctx->RenderMode==GL_SELECT) {
+ /* Bitmaps don't generate selection hits. See appendix B of 1.1 spec. */
+ }
+
+ /* update raster position */
+ ctx->Current.RasterPos[0] += xmove;
+ ctx->Current.RasterPos[1] += ymove;
+}