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Diffstat (limited to 'src/mesa/drivers/osmesa/osmesa.c')
-rw-r--r--src/mesa/drivers/osmesa/osmesa.c287
1 files changed, 143 insertions, 144 deletions
diff --git a/src/mesa/drivers/osmesa/osmesa.c b/src/mesa/drivers/osmesa/osmesa.c
index 69fba7f3c7..ac155a8e2a 100644
--- a/src/mesa/drivers/osmesa/osmesa.c
+++ b/src/mesa/drivers/osmesa/osmesa.c
@@ -1,4 +1,4 @@
-/* $Id: osmesa.c,v 1.42 2001/01/29 20:47:39 keithw Exp $ */
+/* $Id: osmesa.c,v 1.43 2001/01/29 20:56:32 keithw Exp $ */
/*
* Mesa 3-D graphics library
@@ -644,164 +644,163 @@ static void set_read_buffer( GLcontext *ctx, GLframebuffer *buffer, GLenum mode
}
-static GLbitfield clear( GLcontext *ctx, GLbitfield mask, GLboolean all,
- GLint x, GLint y, GLint width, GLint height )
+static void clear( GLcontext *ctx, GLbitfield mask, GLboolean all,
+ GLint x, GLint y, GLint width, GLint height )
{
OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
- /* we can't handle color or index masking */
- if (*colorMask != 0xffffffff || ctx->Color.IndexMask != 0xffffffff)
- return mask;
-
/* sanity check - we only have a front-left buffer */
ASSERT((mask & (DD_FRONT_RIGHT_BIT | DD_BACK_LEFT_BIT | DD_BACK_RIGHT_BIT)) == 0);
-
- if (mask & DD_FRONT_LEFT_BIT) {
- if (osmesa->format == OSMESA_COLOR_INDEX) {
- if (all) {
- /* Clear whole CI buffer */
+ if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
+ if (mask & DD_FRONT_LEFT_BIT) {
+ if (osmesa->format == OSMESA_COLOR_INDEX) {
+ if (all) {
+ /* Clear whole CI buffer */
#if CHAN_TYPE == GL_UNSIGNED_BYTE
- MEMSET(osmesa->buffer, ctx->Color.ClearIndex,
- osmesa->rowlength * osmesa->height);
+ MEMSET(osmesa->buffer, ctx->Color.ClearIndex,
+ osmesa->rowlength * osmesa->height);
#else
- const GLint n = osmesa->rowlength * osmesa->height;
- GLchan *buffer = (GLchan *) osmesa->buffer;
- GLint i;
- for (i = 0; i < n; i ++) {
- buffer[i] = ctx->Color.ClearIndex;
- }
+ const GLint n = osmesa->rowlength * osmesa->height;
+ GLchan *buffer = (GLchan *) osmesa->buffer;
+ GLint i;
+ for (i = 0; i < n; i ++) {
+ buffer[i] = ctx->Color.ClearIndex;
+ }
#endif
- }
- else {
- /* Clear part of CI buffer */
- const GLchan clearIndex = (GLchan) ctx->Color.ClearIndex;
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLchan *ptr1 = PIXELADDR1(x, (y + i));
- for (j = 0; j < width; j++) {
- *ptr1++ = clearIndex;
- }
- }
- }
- }
- else if (osmesa->format == OSMESA_RGB) {
- const GLchan r = ctx->Color.ClearColor[0];
- const GLchan g = ctx->Color.ClearColor[1];
- const GLchan b = ctx->Color.ClearColor[2];
- if (all) {
- /* Clear whole RGB buffer */
- GLuint n = osmesa->rowlength * osmesa->height;
- GLchan *ptr3 = (GLchan *) osmesa->buffer;
- GLuint i;
- for (i = 0; i < n; i++) {
- PACK_RGB(ptr3, r, g, b);
- ptr3 += 3;
- }
- }
- else {
- /* Clear part of RGB buffer */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLchan *ptr3 = PIXELADDR3(x, (y + i));
- for (j = 0; j < width; j++) {
- PACK_RGB(ptr3, r, g, b);
- ptr3 += 3;
- }
- }
- }
- }
- else if (osmesa->format == OSMESA_BGR) {
- const GLchan r = ctx->Color.ClearColor[0];
- const GLchan g = ctx->Color.ClearColor[1];
- const GLchan b = ctx->Color.ClearColor[2];
- if (all) {
- /* Clear whole RGB buffer */
- const GLint n = osmesa->rowlength * osmesa->height;
- GLchan *ptr3 = (GLchan *) osmesa->buffer;
- GLint i;
- for (i = 0; i < n; i++) {
- PACK_BGR(ptr3, r, g, b);
- ptr3 += 3;
- }
- }
- else {
- /* Clear part of RGB buffer */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLchan *ptr3 = PIXELADDR3(x, (y + i));
- for (j = 0; j < width; j++) {
- PACK_BGR(ptr3, r, g, b);
- ptr3 += 3;
- }
- }
- }
- }
- else {
+ }
+ else {
+ /* Clear part of CI buffer */
+ const GLchan clearIndex = (GLchan) ctx->Color.ClearIndex;
+ GLint i, j;
+ for (i = 0; i < height; i++) {
+ GLchan *ptr1 = PIXELADDR1(x, (y + i));
+ for (j = 0; j < width; j++) {
+ *ptr1++ = clearIndex;
+ }
+ }
+ }
+ }
+ else if (osmesa->format == OSMESA_RGB) {
+ const GLchan r = ctx->Color.ClearColor[0];
+ const GLchan g = ctx->Color.ClearColor[1];
+ const GLchan b = ctx->Color.ClearColor[2];
+ if (all) {
+ /* Clear whole RGB buffer */
+ GLuint n = osmesa->rowlength * osmesa->height;
+ GLchan *ptr3 = (GLchan *) osmesa->buffer;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ PACK_RGB(ptr3, r, g, b);
+ ptr3 += 3;
+ }
+ }
+ else {
+ /* Clear part of RGB buffer */
+ GLint i, j;
+ for (i = 0; i < height; i++) {
+ GLchan *ptr3 = PIXELADDR3(x, (y + i));
+ for (j = 0; j < width; j++) {
+ PACK_RGB(ptr3, r, g, b);
+ ptr3 += 3;
+ }
+ }
+ }
+ }
+ else if (osmesa->format == OSMESA_BGR) {
+ const GLchan r = ctx->Color.ClearColor[0];
+ const GLchan g = ctx->Color.ClearColor[1];
+ const GLchan b = ctx->Color.ClearColor[2];
+ if (all) {
+ /* Clear whole RGB buffer */
+ const GLint n = osmesa->rowlength * osmesa->height;
+ GLchan *ptr3 = (GLchan *) osmesa->buffer;
+ GLint i;
+ for (i = 0; i < n; i++) {
+ PACK_BGR(ptr3, r, g, b);
+ ptr3 += 3;
+ }
+ }
+ else {
+ /* Clear part of RGB buffer */
+ GLint i, j;
+ for (i = 0; i < height; i++) {
+ GLchan *ptr3 = PIXELADDR3(x, (y + i));
+ for (j = 0; j < width; j++) {
+ PACK_BGR(ptr3, r, g, b);
+ ptr3 += 3;
+ }
+ }
+ }
+ }
+ else {
#if CHAN_TYPE == GL_UNSIGNED_BYTE
- /* 4-byte pixel value */
- GLuint clearPixel;
- GLchan *clr = (GLchan *) &clearPixel;
- clr[osmesa->rInd] = ctx->Color.ClearColor[0];
- clr[osmesa->gInd] = ctx->Color.ClearColor[1];
- clr[osmesa->bInd] = ctx->Color.ClearColor[2];
- clr[osmesa->aInd] = ctx->Color.ClearColor[3];
- if (all) {
- /* Clear whole RGBA buffer */
- const GLuint n = osmesa->rowlength * osmesa->height;
- GLuint *ptr4 = (GLuint *) osmesa->buffer;
- GLuint i;
- if (clearPixel) {
- for (i = 0; i < n; i++) {
- *ptr4++ = clearPixel;
- }
- }
- else {
- BZERO(ptr4, n * sizeof(GLuint));
- }
- }
- else {
- /* Clear part of RGBA buffer */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLuint *ptr4 = (GLuint *) PIXELADDR4(x, (y + i));
- for (j = 0; j < width; j++) {
- *ptr4++ = clearPixel;
- }
- }
- }
+ /* 4-byte pixel value */
+ GLuint clearPixel;
+ GLchan *clr = (GLchan *) &clearPixel;
+ clr[osmesa->rInd] = ctx->Color.ClearColor[0];
+ clr[osmesa->gInd] = ctx->Color.ClearColor[1];
+ clr[osmesa->bInd] = ctx->Color.ClearColor[2];
+ clr[osmesa->aInd] = ctx->Color.ClearColor[3];
+ if (all) {
+ /* Clear whole RGBA buffer */
+ const GLuint n = osmesa->rowlength * osmesa->height;
+ GLuint *ptr4 = (GLuint *) osmesa->buffer;
+ GLuint i;
+ if (clearPixel) {
+ for (i = 0; i < n; i++) {
+ *ptr4++ = clearPixel;
+ }
+ }
+ else {
+ BZERO(ptr4, n * sizeof(GLuint));
+ }
+ }
+ else {
+ /* Clear part of RGBA buffer */
+ GLint i, j;
+ for (i = 0; i < height; i++) {
+ GLuint *ptr4 = (GLuint *) PIXELADDR4(x, (y + i));
+ for (j = 0; j < width; j++) {
+ *ptr4++ = clearPixel;
+ }
+ }
+ }
#else
- const GLchan r = ctx->Color.ClearColor[0];
- const GLchan g = ctx->Color.ClearColor[1];
- const GLchan b = ctx->Color.ClearColor[2];
- const GLchan a = ctx->Color.ClearColor[3];
- if (all) {
- /* Clear whole RGBA buffer */
- const GLuint n = osmesa->rowlength * osmesa->height;
- GLchan *p = (GLchan *) osmesa->buffer;
- GLuint i;
- for (i = 0; i < n; i++) {
- PACK_RGBA(p, r, g, b, a);
- p += 4;
- }
- }
- else {
- /* Clear part of RGBA buffer */
- GLint i, j;
- for (i = 0; i < height; i++) {
- GLchan *p = PIXELADDR4(x, (y + i));
- for (j = 0; j < width; j++) {
- PACK_RGBA(p, r, g, b, a);
- p += 4;
- }
- }
- }
+ const GLchan r = ctx->Color.ClearColor[0];
+ const GLchan g = ctx->Color.ClearColor[1];
+ const GLchan b = ctx->Color.ClearColor[2];
+ const GLchan a = ctx->Color.ClearColor[3];
+ if (all) {
+ /* Clear whole RGBA buffer */
+ const GLuint n = osmesa->rowlength * osmesa->height;
+ GLchan *p = (GLchan *) osmesa->buffer;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ PACK_RGBA(p, r, g, b, a);
+ p += 4;
+ }
+ }
+ else {
+ /* Clear part of RGBA buffer */
+ GLint i, j;
+ for (i = 0; i < height; i++) {
+ GLchan *p = PIXELADDR4(x, (y + i));
+ for (j = 0; j < width; j++) {
+ PACK_RGBA(p, r, g, b, a);
+ p += 4;
+ }
+ }
+ }
#endif
+ }
+ mask &= ~DD_FRONT_LEFT_BIT;
}
}
- /* have Mesa clear all other buffers */
- return mask & (~DD_FRONT_LEFT_BIT);
+
+ if (mask)
+ _swrast_Clear( ctx, mask, all, x, y, width, height );
}
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