diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/r300/r300_context.c | 17 | ||||
| -rw-r--r-- | src/gallium/drivers/r300/r300_context.h | 4 | ||||
| -rw-r--r-- | src/gallium/drivers/r300/r300_render.c | 4 | ||||
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 20 |
4 files changed, 40 insertions, 5 deletions
diff --git a/src/gallium/drivers/r300/r300_context.c b/src/gallium/drivers/r300/r300_context.c index fb099e2a7d0..e8c09b214af 100644 --- a/src/gallium/drivers/r300/r300_context.c +++ b/src/gallium/drivers/r300/r300_context.c @@ -79,6 +79,9 @@ static void r300_release_referenced_objects(struct r300_context *r300) NULL); } + /* The dummy VBO. */ + pipe_resource_reference(&r300->dummy_vb, NULL); + /* The SWTCL VBO. */ pipe_resource_reference(&r300->vbo, NULL); @@ -488,6 +491,7 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen, rtempl.target = PIPE_TEXTURE_2D; rtempl.format = PIPE_FORMAT_I8_UNORM; rtempl.bind = PIPE_BIND_SAMPLER_VIEW; + rtempl.usage = PIPE_USAGE_IMMUTABLE; rtempl.width0 = 1; rtempl.height0 = 1; rtempl.depth0 = 1; @@ -501,6 +505,19 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen, pipe_resource_reference(&tex, NULL); } + { + struct pipe_resource vb = {}; + vb.target = PIPE_BUFFER; + vb.format = PIPE_FORMAT_R8_UNORM; + vb.bind = PIPE_BIND_VERTEX_BUFFER; + vb.usage = PIPE_USAGE_IMMUTABLE; + vb.width0 = sizeof(float) * 16; + vb.height0 = 1; + vb.depth0 = 1; + + r300->dummy_vb = screen->resource_create(screen, &vb); + } + return &r300->context; fail: diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h index b59bc002610..7217c51b951 100644 --- a/src/gallium/drivers/r300/r300_context.h +++ b/src/gallium/drivers/r300/r300_context.h @@ -480,6 +480,10 @@ struct r300_context { * dummy texture there. */ struct r300_sampler_view *texkill_sampler; + /* When no vertex buffer is set, this one is used instead to prevent + * hardlocks. */ + struct pipe_resource *dummy_vb; + /* The currently active query. */ struct r300_query *query_current; /* The saved query for blitter operations. */ diff --git a/src/gallium/drivers/r300/r300_render.c b/src/gallium/drivers/r300/r300_render.c index 000f8a0d481..60700cf3037 100644 --- a/src/gallium/drivers/r300/r300_render.c +++ b/src/gallium/drivers/r300/r300_render.c @@ -643,10 +643,6 @@ static void r300_draw_vbo(struct pipe_context* pipe, return; } - if (!r300->velems->count || !r300->vertex_buffer_count) { - return; - } - /* Index buffer range checking. */ if (indexed) { assert(r300->index_buffer.offset % r300->index_buffer.index_size == 0); diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index bd08bf2d3fd..247c22216e1 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -1448,6 +1448,15 @@ static void r300_set_vertex_buffers(struct pipe_context* pipe, struct pipe_vertex_buffer *vbo; unsigned i, max_index = (1 << 24) - 1; boolean any_user_buffer = FALSE; + struct pipe_vertex_buffer dummy_vb = {0}; + + /* There must be at least one vertex buffer set, otherwise it locks up. */ + if (!count) { + dummy_vb.buffer = r300->dummy_vb; + dummy_vb.max_index = r300->dummy_vb->width0 / 4; + buffers = &dummy_vb; + count = 1; + } if (count == r300->vertex_buffer_count && memcmp(r300->vertex_buffer, buffers, @@ -1601,6 +1610,14 @@ static void* r300_create_vertex_elements_state(struct pipe_context* pipe, struct r300_vertex_element_state *velems; unsigned i; enum pipe_format *format; + struct pipe_vertex_element dummy_attrib = {0}; + + /* R300 Programmable Stream Control (PSC) doesn't support 0 vertex elements. */ + if (!count) { + dummy_attrib.src_format = PIPE_FORMAT_R8G8B8A8_UNORM; + attribs = &dummy_attrib; + count = 1; + } assert(count <= PIPE_MAX_ATTRIBS); velems = CALLOC_STRUCT(r300_vertex_element_state); @@ -1667,7 +1684,8 @@ static void* r300_create_vertex_elements_state(struct pipe_context* pipe, * swizzles are already set up. * Also compute the vertex size. */ for (i = 0; i < count; i++) { - /* This is OK because we check for aligned strides too. */ + /* This is OK because we check for aligned strides too + * elsewhere. */ velems->hw_format_size[i] = align(util_format_get_blocksize(velems->hw_format[i]), 4); velems->vertex_size_dwords += velems->hw_format_size[i] / 4; |