*
**************************************************************************/
- /*
- * Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
- */
+/*
+ * This file implements the st_draw_vbo() function which is called from
+ * Mesa's VBO module. All point/line/triangle rendering is done through
+ * this function whether the user called glBegin/End, glDrawArrays,
+ * glDrawElements, glEvalMesh, or glCalList, etc.
+ *
+ * We basically convert the VBO's vertex attribute/array information into
+ * Gallium vertex state, bind the vertex buffer objects and call
+ * pipe->draw_elements(), pipe->draw_range_elements() or pipe->draw_arrays().
+ *
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
#include "main/imports.h"
#include "main/image.h"
}
-/*
- * If edge flags are needed, setup an bitvector of flags and call
- * pipe->set_edgeflags().
- * XXX memleak: need to free the returned pointer at some point
- */
-static void *
-setup_edgeflags(GLcontext *ctx, GLenum primMode, GLint start, GLint count,
- const struct gl_client_array *array)
-{
- struct pipe_context *pipe = ctx->st->pipe;
-
- if ((primMode == GL_TRIANGLES ||
- primMode == GL_QUADS ||
- primMode == GL_POLYGON) &&
- (ctx->Polygon.FrontMode != GL_FILL ||
- ctx->Polygon.BackMode != GL_FILL)) {
- /* need edge flags */
- GLint i;
- unsigned *vec;
- struct st_buffer_object *stobj = st_buffer_object(array->BufferObj);
- ubyte *map;
-
- if (!stobj || stobj->Base.Name == 0) {
- /* edge flags are not in a VBO */
- return NULL;
- }
-
- vec = (unsigned *) _mesa_calloc(sizeof(unsigned) * ((count + 31) / 32));
- if (!vec)
- return NULL;
-
- map = pipe_buffer_map(pipe->screen, stobj->buffer, PIPE_BUFFER_USAGE_CPU_READ);
- map = ADD_POINTERS(map, array->Ptr);
-
- for (i = 0; i < count; i++) {
- if (*((float *) map))
- vec[i/32] |= 1 << (i % 32);
-
- map += array->StrideB;
- }
-
- pipe_buffer_unmap(pipe->screen, stobj->buffer);
-
- pipe->set_edgeflags(pipe, vec);
- return vec;
- }
- else {
- /* edge flags not needed */
- pipe->set_edgeflags(pipe, NULL);
- return NULL;
- }
-}
/**
*/
static GLboolean
is_interleaved_arrays(const struct st_vertex_program *vp,
+ const struct st_vp_varient *vpv,
const struct gl_client_array **arrays,
GLboolean *userSpace)
{
GLuint num_client_arrays = 0;
const GLubyte *client_addr = NULL;
- for (attr = 0; attr < vp->num_inputs; attr++) {
+ for (attr = 0; attr < vpv->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
const struct gl_buffer_object *bufObj = arrays[mesaAttr]->BufferObj;
const GLsizei stride = arrays[mesaAttr]->StrideB; /* in bytes */
}
}
- *userSpace = (num_client_arrays == vp->num_inputs);
+ *userSpace = (num_client_arrays == vpv->num_inputs);
/* printf("user space: %d (%d %d)\n", (int) *userSpace,num_client_arrays,vp->num_inputs); */
return GL_TRUE;
*/
static void
get_arrays_bounds(const struct st_vertex_program *vp,
- const struct gl_client_array **arrays,
- GLuint max_index,
- const GLubyte **low, const GLubyte **high)
+ const struct st_vp_varient *vpv,
+ const struct gl_client_array **arrays,
+ GLuint max_index,
+ const GLubyte **low, const GLubyte **high)
{
const GLubyte *low_addr = NULL;
+ const GLubyte *high_addr = NULL;
GLuint attr;
- GLint stride;
- for (attr = 0; attr < vp->num_inputs; attr++) {
+ for (attr = 0; attr < vpv->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
+ const GLint stride = arrays[mesaAttr]->StrideB;
const GLubyte *start = arrays[mesaAttr]->Ptr;
- stride = arrays[mesaAttr]->StrideB;
+ const unsigned sz = (arrays[mesaAttr]->Size *
+ _mesa_sizeof_type(arrays[mesaAttr]->Type));
+ const GLubyte *end = start + (max_index * stride) + sz;
+
if (attr == 0) {
low_addr = start;
+ high_addr = end;
}
else {
low_addr = MIN2(low_addr, start);
+ high_addr = MAX2(high_addr, end);
}
}
*low = low_addr;
- *high = low_addr + (max_index + 1) * stride;
+ *high = high_addr;
}
static void
setup_interleaved_attribs(GLcontext *ctx,
const struct st_vertex_program *vp,
+ const struct st_vp_varient *vpv,
const struct gl_client_array **arrays,
GLuint max_index,
GLboolean userSpace,
{
struct pipe_context *pipe = ctx->st->pipe;
GLuint attr;
- const GLubyte *offset0;
+ const GLubyte *offset0 = NULL;
- for (attr = 0; attr < vp->num_inputs; attr++) {
+ for (attr = 0; attr < vpv->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
struct st_buffer_object *stobj = st_buffer_object(bufobj);
if (attr == 0) {
const GLubyte *low, *high;
- get_arrays_bounds(vp, arrays, max_index, &low, &high);
+ get_arrays_bounds(vp, vpv, arrays, max_index, &low, &high);
/*printf("buffer range: %p %p %d\n", low, high, high-low);*/
offset0 = low;
static void
setup_non_interleaved_attribs(GLcontext *ctx,
const struct st_vertex_program *vp,
+ const struct st_vp_varient *vpv,
const struct gl_client_array **arrays,
GLuint max_index,
GLboolean *userSpace,
struct pipe_context *pipe = ctx->st->pipe;
GLuint attr;
- for (attr = 0; attr < vp->num_inputs; attr++) {
+ for (attr = 0; attr < vpv->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
GLsizei stride = arrays[mesaAttr]->StrideB;
}
+static unsigned translate_prim( GLcontext *ctx,
+ unsigned prim )
+{
+ /* Avoid quadstrips if it's easy to do so:
+ */
+ if (prim == GL_QUAD_STRIP &&
+ ctx->Light.ShadeModel != GL_FLAT &&
+ ctx->Polygon.FrontMode == GL_FILL &&
+ ctx->Polygon.BackMode == GL_FILL)
+ prim = GL_TRIANGLE_STRIP;
+
+ return prim;
+}
+
/**
* This function gets plugged into the VBO module and is called when
* we have something to render.
const struct _mesa_prim *prims,
GLuint nr_prims,
const struct _mesa_index_buffer *ib,
+ GLboolean index_bounds_valid,
GLuint min_index,
GLuint max_index)
{
struct pipe_context *pipe = ctx->st->pipe;
const struct st_vertex_program *vp;
+ const struct st_vp_varient *vpv;
const struct pipe_shader_state *vs;
struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS];
GLuint attr;
struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
unsigned num_vbuffers, num_velements;
- GLboolean userSpace;
+ GLboolean userSpace = GL_FALSE;
+ GLboolean vertDataEdgeFlags;
+
+ /* Gallium probably doesn't want this in some cases. */
+ if (!index_bounds_valid)
+ if (!vbo_all_varyings_in_vbos(arrays))
+ vbo_get_minmax_index(ctx, prims, ib, &min_index, &max_index);
/* sanity check for pointer arithmetic below */
assert(sizeof(arrays[0]->Ptr[0]) == 1);
+ vertDataEdgeFlags = arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj &&
+ arrays[VERT_ATTRIB_EDGEFLAG]->BufferObj->Name;
+ if (vertDataEdgeFlags != ctx->st->vertdata_edgeflags) {
+ ctx->st->vertdata_edgeflags = vertDataEdgeFlags;
+ ctx->st->dirty.st |= ST_NEW_EDGEFLAGS_DATA;
+ }
+
st_validate_state(ctx->st);
/* must get these after state validation! */
vp = ctx->st->vp;
- vs = &ctx->st->vp->state;
+ vpv = ctx->st->vp_varient;
+ vs = &vpv->state;
#if 0
if (MESA_VERBOSE & VERBOSE_GLSL) {
/*
* Setup the vbuffer[] and velements[] arrays.
*/
- if (is_interleaved_arrays(vp, arrays, &userSpace)) {
+ if (is_interleaved_arrays(vp, vpv, arrays, &userSpace)) {
/*printf("Draw interleaved\n");*/
- setup_interleaved_attribs(ctx, vp, arrays, max_index, userSpace,
+ setup_interleaved_attribs(ctx, vp, vpv, arrays, max_index, userSpace,
vbuffer, velements);
num_vbuffers = 1;
- num_velements = vp->num_inputs;
+ num_velements = vpv->num_inputs;
if (num_velements == 0)
num_vbuffers = 0;
}
else {
/*printf("Draw non-interleaved\n");*/
- setup_non_interleaved_attribs(ctx, vp, arrays, max_index,
+ setup_non_interleaved_attribs(ctx, vp, vpv, arrays, max_index,
&userSpace, vbuffer, velements);
- num_vbuffers = vp->num_inputs;
- num_velements = vp->num_inputs;
+ num_vbuffers = vpv->num_inputs;
+ num_velements = vpv->num_inputs;
}
#if 0
struct gl_buffer_object *bufobj = ib->obj;
struct pipe_buffer *indexBuf = NULL;
unsigned indexSize, indexOffset, i;
+ unsigned prim;
switch (ib->type) {
case GL_UNSIGNED_INT:
* through to driver & draw module. These interfaces still
* need a bit of work...
*/
- setup_edgeflags(ctx, prims[i].mode,
- prims[i].start + indexOffset, prims[i].count,
- arrays[VERT_ATTRIB_EDGEFLAG]);
+ prim = translate_prim( ctx, prims[i].mode );
pipe->draw_range_elements(pipe, indexBuf, indexSize,
min_index,
max_index,
- prims[i].mode,
+ prim,
prims[i].start + indexOffset, prims[i].count);
}
else {
for (i = 0; i < nr_prims; i++) {
- setup_edgeflags(ctx, prims[i].mode,
- prims[i].start + indexOffset, prims[i].count,
- arrays[VERT_ATTRIB_EDGEFLAG]);
+ prim = translate_prim( ctx, prims[i].mode );
pipe->draw_elements(pipe, indexBuf, indexSize,
- prims[i].mode,
+ prim,
prims[i].start + indexOffset, prims[i].count);
}
}
else {
/* non-indexed */
GLuint i;
+ GLuint prim;
+
for (i = 0; i < nr_prims; i++) {
- setup_edgeflags(ctx, prims[i].mode,
- prims[i].start, prims[i].count,
- arrays[VERT_ATTRIB_EDGEFLAG]);
+ prim = translate_prim( ctx, prims[i].mode );
- pipe->draw_arrays(pipe, prims[i].mode, prims[i].start, prims[i].count);
+ pipe->draw_arrays(pipe, prim, prims[i].start, prims[i].count);
}
}
projects / mesa.git / blobdiff