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make legacy gl2.0 work without BaseVertex extensions

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This commit is contained in:
milek7
2021-01-22 22:19:23 +01:00
parent 78a15bf527
commit 9e7c528114
4 changed files with 49 additions and 21 deletions
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28
openglgeometrybank.cpp
View File

@@ -75,9 +75,6 @@ opengl_vbogeometrybank::draw_( gfx::geometry_handle const &Geometry, gfx::stream
chunk.vertices.data() );
chunkrecord.is_good = true;
}
if( m_activestreams != Streams ) {
bind_streams( Units, Streams );
}
// ...render...
if( chunkrecord.index_count > 0 ) {
/*
@@ -86,6 +83,10 @@ opengl_vbogeometrybank::draw_( gfx::geometry_handle const &Geometry, gfx::stream
chunkrecord.index_count, GL_UNSIGNED_INT, reinterpret_cast<void const *>( chunkrecord.index_offset * sizeof( gfx::basic_index ) ),
chunkrecord.vertex_offset );
*/
if (GLAD_GL_VERSION_3_2 || GLAD_GL_ARB_draw_elements_base_vertex) {
if( m_activestreams != Streams ) {
bind_streams( Units, Streams );
}
::glDrawRangeElementsBaseVertex(
chunk.type,
0, chunkrecord.vertex_count,
@@ -93,6 +94,17 @@ opengl_vbogeometrybank::draw_( gfx::geometry_handle const &Geometry, gfx::stream
chunkrecord.vertex_offset );
}
else {
bind_streams( Units, Streams, chunkrecord.vertex_offset );
::glDrawRangeElements(
chunk.type,
0, chunkrecord.vertex_count,
chunkrecord.index_count, GL_UNSIGNED_INT, reinterpret_cast<void const *>( chunkrecord.index_offset * sizeof( gfx::basic_index ) ) );
}
}
else {
if( m_activestreams != Streams ) {
bind_streams( Units, Streams );
}
::glDrawArrays( chunk.type, chunkrecord.vertex_offset, chunkrecord.vertex_count );
}
// ...post-render cleanup
@@ -211,10 +223,10 @@ opengl_vbogeometrybank::delete_buffer() {
}
void
opengl_vbogeometrybank::bind_streams( gfx::stream_units const &Units, unsigned int const Streams ) {
opengl_vbogeometrybank::bind_streams( gfx::stream_units const &Units, unsigned int const Streams, size_t offset ) {
if( Streams & gfx::stream::position ) {
::glVertexPointer( 3, GL_FLOAT, sizeof( gfx::basic_vertex ), reinterpret_cast<void const *>( 0 ) );
::glVertexPointer( 3, GL_FLOAT, sizeof( gfx::basic_vertex ), reinterpret_cast<void const *>( sizeof( gfx::basic_vertex ) * offset ) );
::glEnableClientState( GL_VERTEX_ARRAY );
}
else {
@@ -222,14 +234,14 @@ opengl_vbogeometrybank::bind_streams( gfx::stream_units const &Units, unsigned i
}
// NOTE: normal and color streams share the data, making them effectively mutually exclusive
if( Streams & gfx::stream::normal ) {
::glNormalPointer( GL_FLOAT, sizeof( gfx::basic_vertex ), reinterpret_cast<void const *>( 12 ) );
::glNormalPointer( GL_FLOAT, sizeof( gfx::basic_vertex ), reinterpret_cast<void const *>( 12 + sizeof( gfx::basic_vertex ) * offset ) );
::glEnableClientState( GL_NORMAL_ARRAY );
}
else {
::glDisableClientState( GL_NORMAL_ARRAY );
}
if( Streams & gfx::stream::color ) {
::glColorPointer( 3, GL_FLOAT, sizeof( gfx::basic_vertex ), reinterpret_cast<void const *>( 12 ) );
::glColorPointer( 3, GL_FLOAT, sizeof( gfx::basic_vertex ), reinterpret_cast<void const *>( 12 + sizeof( gfx::basic_vertex ) * offset ) );
::glEnableClientState( GL_COLOR_ARRAY );
}
else {
@@ -238,7 +250,7 @@ opengl_vbogeometrybank::bind_streams( gfx::stream_units const &Units, unsigned i
if( Streams & gfx::stream::texture ) {
for( auto unit : Units.texture ) {
::glClientActiveTexture( GL_TEXTURE0 + unit );
::glTexCoordPointer( 2, GL_FLOAT, sizeof( gfx::basic_vertex ), reinterpret_cast<void const *>( 24 ) );
::glTexCoordPointer( 2, GL_FLOAT, sizeof( gfx::basic_vertex ), reinterpret_cast<void const *>( 24 + sizeof( gfx::basic_vertex ) * offset ) );
::glEnableClientState( GL_TEXTURE_COORD_ARRAY );
}
m_activetexturearrays = Units.texture;

2
openglgeometrybank.h
View File

@@ -63,7 +63,7 @@ private:
delete_buffer();
static
void
bind_streams( gfx::stream_units const &Units, unsigned int const Streams );
bind_streams(gfx::stream_units const &Units, unsigned int const Streams , size_t offset = 0);
static
void
release_streams();

11
ref/glad/include/glad/glad.h
View File

@@ -1,6 +1,6 @@
/*
OpenGL, OpenGL ES loader generated by glad 0.1.34 on Wed Jan 20 19:37:38 2021.
OpenGL, OpenGL ES loader generated by glad 0.1.34 on Fri Jan 22 22:11:52 2021.
Language/Generator: C/C++
Specification: gl
@@ -9,6 +9,7 @@
Extensions:
GL_ARB_clip_control,
GL_ARB_direct_state_access,
GL_ARB_draw_elements_base_vertex,
GL_ARB_multi_bind,
GL_ARB_texture_filter_anisotropic,
GL_EXT_clip_control,
@@ -26,9 +27,9 @@
Reproducible: False
Commandline:
--profile="compatibility" --api="gl=3.3,gles2=3.2" --generator="c" --spec="gl" --no-loader --extensions="GL_ARB_clip_control,GL_ARB_direct_state_access,GL_ARB_multi_bind,GL_ARB_texture_filter_anisotropic,GL_EXT_clip_control,GL_EXT_framebuffer_object,GL_EXT_geometry_shader,GL_EXT_texture_compression_s3tc,GL_EXT_texture_filter_anisotropic,GL_EXT_texture_sRGB,GL_GREMEDY_string_marker,GL_KHR_debug,GL_OES_draw_elements_base_vertex"
--profile="compatibility" --api="gl=3.3,gles2=3.2" --generator="c" --spec="gl" --no-loader --extensions="GL_ARB_clip_control,GL_ARB_direct_state_access,GL_ARB_draw_elements_base_vertex,GL_ARB_multi_bind,GL_ARB_texture_filter_anisotropic,GL_EXT_clip_control,GL_EXT_framebuffer_object,GL_EXT_geometry_shader,GL_EXT_texture_compression_s3tc,GL_EXT_texture_filter_anisotropic,GL_EXT_texture_sRGB,GL_GREMEDY_string_marker,GL_KHR_debug,GL_OES_draw_elements_base_vertex"
Online:
https://glad.dav1d.de/#profile=compatibility&language=c&specification=gl&api=gl%3D3.3&api=gles2%3D3.2&extensions=GL_ARB_clip_control&extensions=GL_ARB_direct_state_access&extensions=GL_ARB_multi_bind&extensions=GL_ARB_texture_filter_anisotropic&extensions=GL_EXT_clip_control&extensions=GL_EXT_framebuffer_object&extensions=GL_EXT_geometry_shader&extensions=GL_EXT_texture_compression_s3tc&extensions=GL_EXT_texture_filter_anisotropic&extensions=GL_EXT_texture_sRGB&extensions=GL_GREMEDY_string_marker&extensions=GL_KHR_debug&extensions=GL_OES_draw_elements_base_vertex
https://glad.dav1d.de/#profile=compatibility&language=c&specification=gl&api=gl%3D3.3&api=gles2%3D3.2&extensions=GL_ARB_clip_control&extensions=GL_ARB_direct_state_access&extensions=GL_ARB_draw_elements_base_vertex&extensions=GL_ARB_multi_bind&extensions=GL_ARB_texture_filter_anisotropic&extensions=GL_EXT_clip_control&extensions=GL_EXT_framebuffer_object&extensions=GL_EXT_geometry_shader&extensions=GL_EXT_texture_compression_s3tc&extensions=GL_EXT_texture_filter_anisotropic&extensions=GL_EXT_texture_sRGB&extensions=GL_GREMEDY_string_marker&extensions=GL_KHR_debug&extensions=GL_OES_draw_elements_base_vertex
*/
@@ -4774,6 +4775,10 @@ typedef void (APIENTRYP PFNGLGETQUERYBUFFEROBJECTUIVPROC)(GLuint id, GLuint buff
GLAPI PFNGLGETQUERYBUFFEROBJECTUIVPROC glad_glGetQueryBufferObjectuiv;
#define glGetQueryBufferObjectuiv glad_glGetQueryBufferObjectuiv
#endif
#ifndef GL_ARB_draw_elements_base_vertex
#define GL_ARB_draw_elements_base_vertex 1
GLAPI int GLAD_GL_ARB_draw_elements_base_vertex;
#endif
#ifndef GL_ARB_multi_bind
#define GL_ARB_multi_bind 1
GLAPI int GLAD_GL_ARB_multi_bind;

17
ref/glad/src/glad.c
View File

@@ -1,6 +1,6 @@
/*
OpenGL, OpenGL ES loader generated by glad 0.1.34 on Wed Jan 20 19:37:38 2021.
OpenGL, OpenGL ES loader generated by glad 0.1.34 on Fri Jan 22 22:11:52 2021.
Language/Generator: C/C++
Specification: gl
@@ -9,6 +9,7 @@
Extensions:
GL_ARB_clip_control,
GL_ARB_direct_state_access,
GL_ARB_draw_elements_base_vertex,
GL_ARB_multi_bind,
GL_ARB_texture_filter_anisotropic,
GL_EXT_clip_control,
@@ -26,9 +27,9 @@
Reproducible: False
Commandline:
--profile="compatibility" --api="gl=3.3,gles2=3.2" --generator="c" --spec="gl" --no-loader --extensions="GL_ARB_clip_control,GL_ARB_direct_state_access,GL_ARB_multi_bind,GL_ARB_texture_filter_anisotropic,GL_EXT_clip_control,GL_EXT_framebuffer_object,GL_EXT_geometry_shader,GL_EXT_texture_compression_s3tc,GL_EXT_texture_filter_anisotropic,GL_EXT_texture_sRGB,GL_GREMEDY_string_marker,GL_KHR_debug,GL_OES_draw_elements_base_vertex"
--profile="compatibility" --api="gl=3.3,gles2=3.2" --generator="c" --spec="gl" --no-loader --extensions="GL_ARB_clip_control,GL_ARB_direct_state_access,GL_ARB_draw_elements_base_vertex,GL_ARB_multi_bind,GL_ARB_texture_filter_anisotropic,GL_EXT_clip_control,GL_EXT_framebuffer_object,GL_EXT_geometry_shader,GL_EXT_texture_compression_s3tc,GL_EXT_texture_filter_anisotropic,GL_EXT_texture_sRGB,GL_GREMEDY_string_marker,GL_KHR_debug,GL_OES_draw_elements_base_vertex"
Online:
https://glad.dav1d.de/#profile=compatibility&language=c&specification=gl&api=gl%3D3.3&api=gles2%3D3.2&extensions=GL_ARB_clip_control&extensions=GL_ARB_direct_state_access&extensions=GL_ARB_multi_bind&extensions=GL_ARB_texture_filter_anisotropic&extensions=GL_EXT_clip_control&extensions=GL_EXT_framebuffer_object&extensions=GL_EXT_geometry_shader&extensions=GL_EXT_texture_compression_s3tc&extensions=GL_EXT_texture_filter_anisotropic&extensions=GL_EXT_texture_sRGB&extensions=GL_GREMEDY_string_marker&extensions=GL_KHR_debug&extensions=GL_OES_draw_elements_base_vertex
https://glad.dav1d.de/#profile=compatibility&language=c&specification=gl&api=gl%3D3.3&api=gles2%3D3.2&extensions=GL_ARB_clip_control&extensions=GL_ARB_direct_state_access&extensions=GL_ARB_draw_elements_base_vertex&extensions=GL_ARB_multi_bind&extensions=GL_ARB_texture_filter_anisotropic&extensions=GL_EXT_clip_control&extensions=GL_EXT_framebuffer_object&extensions=GL_EXT_geometry_shader&extensions=GL_EXT_texture_compression_s3tc&extensions=GL_EXT_texture_filter_anisotropic&extensions=GL_EXT_texture_sRGB&extensions=GL_GREMEDY_string_marker&extensions=GL_KHR_debug&extensions=GL_OES_draw_elements_base_vertex
*/
#include <stdio.h>
@@ -985,6 +986,7 @@ PFNGLWINDOWPOS3SPROC glad_glWindowPos3s = NULL;
PFNGLWINDOWPOS3SVPROC glad_glWindowPos3sv = NULL;
int GLAD_GL_ARB_clip_control = 0;
int GLAD_GL_ARB_direct_state_access = 0;
int GLAD_GL_ARB_draw_elements_base_vertex = 0;
int GLAD_GL_ARB_multi_bind = 0;
int GLAD_GL_ARB_texture_filter_anisotropic = 0;
int GLAD_GL_EXT_clip_control = 0;
@@ -2002,6 +2004,13 @@ static void load_GL_ARB_direct_state_access(GLADloadproc load) {
glad_glGetQueryBufferObjectui64v = (PFNGLGETQUERYBUFFEROBJECTUI64VPROC)load("glGetQueryBufferObjectui64v");
glad_glGetQueryBufferObjectuiv = (PFNGLGETQUERYBUFFEROBJECTUIVPROC)load("glGetQueryBufferObjectuiv");
}
static void load_GL_ARB_draw_elements_base_vertex(GLADloadproc load) {
if(!GLAD_GL_ARB_draw_elements_base_vertex) return;
glad_glDrawElementsBaseVertex = (PFNGLDRAWELEMENTSBASEVERTEXPROC)load("glDrawElementsBaseVertex");
glad_glDrawRangeElementsBaseVertex = (PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC)load("glDrawRangeElementsBaseVertex");
glad_glDrawElementsInstancedBaseVertex = (PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC)load("glDrawElementsInstancedBaseVertex");
glad_glMultiDrawElementsBaseVertex = (PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC)load("glMultiDrawElementsBaseVertex");
}
static void load_GL_ARB_multi_bind(GLADloadproc load) {
if(!GLAD_GL_ARB_multi_bind) return;
glad_glBindBuffersBase = (PFNGLBINDBUFFERSBASEPROC)load("glBindBuffersBase");
@@ -2064,6 +2073,7 @@ static int find_extensionsGL(void) {
if (!get_exts()) return 0;
GLAD_GL_ARB_clip_control = has_ext("GL_ARB_clip_control");
GLAD_GL_ARB_direct_state_access = has_ext("GL_ARB_direct_state_access");
GLAD_GL_ARB_draw_elements_base_vertex = has_ext("GL_ARB_draw_elements_base_vertex");
GLAD_GL_ARB_multi_bind = has_ext("GL_ARB_multi_bind");
GLAD_GL_ARB_texture_filter_anisotropic = has_ext("GL_ARB_texture_filter_anisotropic");
GLAD_GL_EXT_framebuffer_object = has_ext("GL_EXT_framebuffer_object");
@@ -2152,6 +2162,7 @@ int gladLoadGLLoader(GLADloadproc load) {
if (!find_extensionsGL()) return 0;
load_GL_ARB_clip_control(load);
load_GL_ARB_direct_state_access(load);
load_GL_ARB_draw_elements_base_vertex(load);
load_GL_ARB_multi_bind(load);
load_GL_EXT_framebuffer_object(load);
load_GL_GREMEDY_string_marker(load);