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mesa: replace large/MAX_WIDTH stack allocations with heap allocations

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This commit is contained in:
Brian Paul 2010-12-02 13:56:58 -07:00
parent fae7cb8ed8
commit 896a08bde6
1 changed files with 24 additions and 3 deletions
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27
src/mesa/main/texgetimage.c
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@ -120,10 +120,15 @@ get_tex_depth(struct gl_context *ctx, GLuint dimensions,
const GLint height = texImage->Height;
const GLint depth = texImage->Depth;
GLint img, row, col;
GLfloat *depthRow = (GLfloat *) malloc(width * sizeof(GLfloat));
if (!depthRow) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
return;
}
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
GLfloat depthRow[MAX_WIDTH];
void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
width, height, format, type,
img, row, 0);
@ -135,6 +140,8 @@ get_tex_depth(struct gl_context *ctx, GLuint dimensions,
_mesa_pack_depth_span(ctx, width, dest, type, depthRow, &ctx->Pack);
}
}
free(depthRow);
}
@ -244,6 +251,12 @@ get_tex_srgb(struct gl_context *ctx, GLuint dimensions,
const GLint depth = texImage->Depth;
const GLbitfield transferOps = 0x0;
GLint img, row;
GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
if (!rgba) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
return;
}
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
@ -251,7 +264,6 @@ get_tex_srgb(struct gl_context *ctx, GLuint dimensions,
width, height, format, type,
img, row, 0);
GLfloat rgba[MAX_WIDTH][4];
GLint col;
/* convert row to RGBA format */
@ -279,6 +291,8 @@ get_tex_srgb(struct gl_context *ctx, GLuint dimensions,
&ctx->Pack, transferOps);
}
}
free(rgba);
}
@ -314,13 +328,18 @@ get_tex_rgba(struct gl_context *ctx, GLuint dimensions,
*/
GLbitfield transferOps = 0x0;
GLint img, row;
GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
if (!rgba) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
return;
}
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
width, height, format, type,
img, row, 0);
GLfloat rgba[MAX_WIDTH][4];
GLint col;
GLenum dataType = _mesa_get_format_datatype(texImage->TexFormat);
@ -364,6 +383,8 @@ get_tex_rgba(struct gl_context *ctx, GLuint dimensions,
&ctx->Pack, transferOps);
}
}
free(rgba);
}