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overlaytopleft/games-fps/gzdoom/files/0033-Fixing-GLES-mode-to-work-on-real-GLES-hardware-and-O.patch

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From adcb59e00e3f5a4e623be4b0b629b4bd8dfe933f Mon Sep 17 00:00:00 2001
From: Emile Belanger <emile.belanger@gmail.com>
Date: Sat, 4 Feb 2023 22:20:05 +0000
Subject: [PATCH 33/51] Fixing GLES mode to work on real GLES hardware and
OpenGL 2 again
---
src/common/rendering/gles/gles_buffers.cpp | 10 +-
src/common/rendering/gles/gles_hwtexture.cpp | 59 +++----
.../rendering/gles/gles_renderstate.cpp | 2 +-
src/common/rendering/gles/gles_system.cpp | 153 +++++++++++-------
src/common/rendering/gles/gles_system.h | 70 +++++---
5 files changed, 172 insertions(+), 122 deletions(-)
diff --git a/src/common/rendering/gles/gles_buffers.cpp b/src/common/rendering/gles/gles_buffers.cpp
index cf7b8ae97..7f56f737f 100644
--- a/src/common/rendering/gles/gles_buffers.cpp
+++ b/src/common/rendering/gles/gles_buffers.cpp
@@ -234,8 +234,7 @@ void GLBuffer::Resize(size_t newsize)
void GLBuffer::GPUDropSync()
{
-#if !(USE_GLES2) // Only applicable when running on desktop for now
- if (gles.useMappedBuffers && glFenceSync && glClientWaitSync)
+ if (gles.glesMode > GLES_MODE_GLES && gles.useMappedBuffers && glFenceSync && glDeleteSync)
{
if (mGLSync != NULL)
{
@@ -244,13 +243,11 @@ void GLBuffer::GPUDropSync()
mGLSync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
}
-#endif
}
void GLBuffer::GPUWaitSync()
{
-#if !(USE_GLES2) // Only applicable when running on desktop for now
- if (gles.useMappedBuffers && glFenceSync && glClientWaitSync)
+ if (gles.glesMode > GLES_MODE_GLES && gles.useMappedBuffers && glDeleteSync && glClientWaitSync)
{
GLenum status = glClientWaitSync(mGLSync, GL_SYNC_FLUSH_COMMANDS_BIT, 1000 * 1000 * 50); // Wait for a max of 50ms...
@@ -263,7 +260,6 @@ void GLBuffer::GPUWaitSync()
mGLSync = NULL;
}
-#endif
}
@@ -318,7 +314,7 @@ void GLVertexBuffer::Bind(int *offsets)
glVertexAttribPointer(i, attrinf.size, attrinf.format, attrinf.normalize, (GLsizei)mStride, (void*)(intptr_t)ofs);
else
{
- if (gles.gles3Features)
+ if (gles.glesMode >= GLES_MODE_OGL3)
glVertexAttribIPointer(i, attrinf.size, attrinf.format, (GLsizei)mStride, (void*)(intptr_t)ofs);
}
}
diff --git a/src/common/rendering/gles/gles_hwtexture.cpp b/src/common/rendering/gles/gles_hwtexture.cpp
index 43425ce7d..3f07c65d6 100644
--- a/src/common/rendering/gles/gles_hwtexture.cpp
+++ b/src/common/rendering/gles/gles_hwtexture.cpp
@@ -130,44 +130,47 @@ unsigned int FHardwareTexture::CreateTexture(unsigned char * buffer, int w, int
int sourcetype;
-
-#if USE_GLES2
- if (glTextureBytes == 1)
+ if (gles.glesMode == GLES_MODE_GLES)
{
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- sourcetype = GL_ALPHA;
- texformat = GL_ALPHA;
- }
- else
- {
- sourcetype = GL_BGRA;
- texformat = GL_BGRA;
- }
-#else
- if (glTextureBytes == 1)
- {
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- sourcetype = GL_RED;
- texformat = GL_RED;
+ if (glTextureBytes == 1)
+ {
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ sourcetype = GL_ALPHA;
+ texformat = GL_ALPHA;
+ }
+ else
+ {
+ sourcetype = GL_BGRA; // These two must be the same
+ texformat = GL_BGRA;
+ }
}
else
{
- sourcetype = GL_BGRA;
- texformat = GL_RGBA;
+ if (glTextureBytes == 1) //Use Red channel instread becuase Alpha does not work in OpenGL, swizzle later
+ {
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ sourcetype = GL_RED;
+ texformat = GL_RED;
+ }
+ else
+ {
+ sourcetype = GL_BGRA;
+ texformat = GL_RGBA;
+ }
}
-#endif
glTexImage2D(GL_TEXTURE_2D, 0, texformat, rw, rh, 0, sourcetype, GL_UNSIGNED_BYTE, buffer);
-#if !(USE_GLES2)
- // The shader is using the alpha channel instead of red, this work on GLES but not on GL
- // So the texture uses GL_RED and this swizzels the red channel into the alpha channel
- if (glTextureBytes == 1)
+ if (gles.glesMode != GLES_MODE_GLES)
{
- GLint swizzleMask[] = { GL_ZERO, GL_ZERO, GL_ZERO, GL_RED };
- glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask);
+ // The shader is using the alpha channel instead of red, this work on GLES but not on GL
+ // So the texture uses GL_RED and this swizzels the red channel into the alpha channel
+ if (glTextureBytes == 1)
+ {
+ GLint swizzleMask[] = { GL_ZERO, GL_ZERO, GL_ZERO, GL_RED };
+ glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask);
+ }
}
-#endif
if (deletebuffer && buffer) free(buffer);
diff --git a/src/common/rendering/gles/gles_renderstate.cpp b/src/common/rendering/gles/gles_renderstate.cpp
index 87cf2681e..5995fd3b6 100644
--- a/src/common/rendering/gles/gles_renderstate.cpp
+++ b/src/common/rendering/gles/gles_renderstate.cpp
@@ -346,7 +346,7 @@ bool FGLRenderState::ApplyShader()
activeShader->cur->muLightRange.Set(range);
}
- if (gles.gles3Features)
+ if (gles.glesMode >= GLES_MODE_OGL3)
{
// Upload bone data
// NOTE, this is pretty inefficient, it will be reloading the same data over and over in a single frame
diff --git a/src/common/rendering/gles/gles_system.cpp b/src/common/rendering/gles/gles_system.cpp
index 22ba8cad6..bb7d61687 100644
--- a/src/common/rendering/gles/gles_system.cpp
+++ b/src/common/rendering/gles/gles_system.cpp
@@ -12,50 +12,16 @@ EXTERN_CVAR(Bool, gl_customshader);
void setGlVersion(double glv);
-#if USE_GLES2
+#if USE_GLAD_LOADER
PFNGLMAPBUFFERRANGEEXTPROC glMapBufferRange = NULL;
PFNGLUNMAPBUFFEROESPROC glUnmapBuffer = NULL;
PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer = NULL;
+PFNGLFENCESYNCPROC glFenceSync = NULL;
+PFNGLCLIENTWAITSYNCPROC glClientWaitSync = NULL;
+PFNGLDELETESYNCPROC glDeleteSync = NULL;
-#ifdef __ANDROID__
-#include <dlfcn.h>
-
-static void* LoadGLES2Proc(const char* name)
-{
- static void *glesLib = NULL;
-
- if(!glesLib)
- {
- int flags = RTLD_LOCAL | RTLD_NOW;
-
- glesLib = dlopen("libGLESv2_CM.so", flags);
- if(!glesLib)
- {
- glesLib = dlopen("libGLESv2.so", flags);
- }
- if(!glesLib)
- {
- glesLib = dlopen("libGLESv2.so.2", flags);
- }
- }
-
- void * ret = NULL;
- ret = dlsym(glesLib, name);
-
- if(!ret)
- {
- //LOGI("Failed to load: %s", name);
- }
- else
- {
- //LOGI("Loaded %s func OK", name);
- }
-
- return ret;
-}
-
-#elif defined _WIN32
+#if defined _WIN32
#include <windows.h>
@@ -80,9 +46,38 @@ static void* LoadGLES2Proc(const char* name)
}
}
+#else
+
+#include <dlfcn.h>
+
+static void* LoadGLES2Proc(const char* name)
+{
+ static void* glesLib = NULL;
+
+ if (!glesLib)
+ {
+ int flags = RTLD_LOCAL | RTLD_NOW;
+
+ glesLib = dlopen("libGLESv2_CM.so", flags);
+ if (!glesLib)
+ {
+ glesLib = dlopen("libGLESv2.so", flags);
+ }
+ if (!glesLib)
+ {
+ glesLib = dlopen("libGLESv2.so.2", flags);
+ }
+ }
+
+ void* ret = NULL;
+ ret = dlsym(glesLib, name);
+
+ return ret;
+}
+
#endif
-#endif // USE_GLES2
+#endif // USE_GLAD_LOADER
static TArray<FString> m_Extensions;
@@ -126,7 +121,7 @@ namespace OpenGLESRenderer
void InitGLES()
{
-#if USE_GLES2
+#if USE_GLAD_LOADER
if (!gladLoadGLES2Loader(&LoadGLES2Proc))
{
@@ -136,6 +131,10 @@ namespace OpenGLESRenderer
glMapBufferRange = (PFNGLMAPBUFFERRANGEEXTPROC)LoadGLES2Proc("glMapBufferRange");
glUnmapBuffer = (PFNGLUNMAPBUFFEROESPROC)LoadGLES2Proc("glUnmapBuffer");
glVertexAttribIPointer = (PFNGLVERTEXATTRIBIPOINTERPROC)LoadGLES2Proc("glVertexAttribIPointer");
+
+ glFenceSync = (PFNGLFENCESYNCPROC)LoadGLES2Proc("glFenceSync");
+ glClientWaitSync = (PFNGLCLIENTWAITSYNCPROC)LoadGLES2Proc("glClientWaitSync");
+ glDeleteSync = (PFNGLDELETESYNCPROC)LoadGLES2Proc("glDeleteSync");
#else
static bool first = true;
@@ -161,48 +160,78 @@ namespace OpenGLESRenderer
{
Printf(" %s\n", m_Extensions[i].GetChars());
}
+ const char* glVersionStr = (const char*)glGetString(GL_VERSION);
+ double glVersion = strtod(glVersionStr, NULL);
+ Printf("GL Version parsed = %f\n", glVersion);
gles.flags = RFL_NO_CLIP_PLANES;
gles.useMappedBuffers = gles_use_mapped_buffer;
gles.forceGLSLv100 = gles_force_glsl_v100;
gles.maxlights = gles_max_lights_per_surface;
+ gles.numlightvectors = (gles.maxlights * LIGHT_VEC4_NUM);
gles.modelstring = (char*)glGetString(GL_RENDERER);
gles.vendorstring = (char*)glGetString(GL_VENDOR);
- gl_customshader = false;
+
+ gl_customshader = false; // Disable user shaders for GLES renderer
GLint maxTextureSize[1];
glGetIntegerv(GL_MAX_TEXTURE_SIZE, maxTextureSize);
-
gles.max_texturesize = maxTextureSize[0];
Printf("GL_MAX_TEXTURE_SIZE: %d\n", gles.max_texturesize);
-#if USE_GLES2
- gles.gles3Features = false; // Enales IQM bones
- gles.shaderVersionString = "100";
- gles.depthStencilAvailable = CheckExtension("GL_OES_packed_depth_stencil");
- gles.npotAvailable = CheckExtension("GL_OES_texture_npot");
- gles.depthClampAvailable = CheckExtension("GL_EXT_depth_clamp");
- gles.anistropicFilterAvailable = CheckExtension("GL_EXT_texture_filter_anisotropic");
-#else
- gles.gles3Features = true;
- gles.shaderVersionString = "330";
- gles.depthStencilAvailable = true;
- gles.npotAvailable = true;
- gles.useMappedBuffers = true;
- gles.depthClampAvailable = true;
- gles.anistropicFilterAvailable = true;
-#endif
+ // Check if running on a GLES device, version string will start with 'OpenGL ES'
+ if (!strncmp(glVersionStr, "OpenGL ES", strlen("OpenGL ES")))
+ {
+ gles.glesMode = GLES_MODE_GLES;
+ }
+ else // Else runnning on Desktop, check OpenGL version is 3 or above
+ {
+ if (glVersion > 3.29)
+ gles.glesMode = GLES_MODE_OGL3; // 3.3 or above
+ else
+ gles.glesMode = GLES_MODE_OGL2; // Below 3.3
+ }
- gles.numlightvectors = (gles.maxlights * LIGHT_VEC4_NUM);
- const char* glversion = (const char*)glGetString(GL_VERSION);
- setGlVersion( strtod(glversion, NULL));
+ if (gles.glesMode == GLES_MODE_GLES)
+ {
+ Printf("GLES choosing mode: GLES_MODE_GLES\n");
+ gles.shaderVersionString = "100";
+ gles.depthStencilAvailable = CheckExtension("GL_OES_packed_depth_stencil");
+ gles.npotAvailable = CheckExtension("GL_OES_texture_npot");
+ gles.depthClampAvailable = CheckExtension("GL_EXT_depth_clamp");
+ gles.anistropicFilterAvailable = CheckExtension("GL_EXT_texture_filter_anisotropic");
+ }
+ else if (gles.glesMode == GLES_MODE_OGL2)
+ {
+ Printf("GLES choosing mode: GLES_MODE_OGL2\n");
+
+ gles.shaderVersionString = "100";
+ gles.depthStencilAvailable = true;
+ gles.npotAvailable = true;
+ gles.useMappedBuffers = true;
+ gles.depthClampAvailable = true;
+ gles.anistropicFilterAvailable = true;
+ }
+ else if (gles.glesMode == GLES_MODE_OGL3)
+ {
+ Printf("GLES choosing mode: GLES_MODE_OGL3\n");
+
+ gles.shaderVersionString = "330";
+ gles.depthStencilAvailable = true;
+ gles.npotAvailable = true;
+ gles.useMappedBuffers = true;
+ gles.depthClampAvailable = true;
+ gles.anistropicFilterAvailable = true;
+ }
+
+ setGlVersion(glVersion);
}
}
diff --git a/src/common/rendering/gles/gles_system.h b/src/common/rendering/gles/gles_system.h
index 481c132d0..0edec6282 100644
--- a/src/common/rendering/gles/gles_system.h
+++ b/src/common/rendering/gles/gles_system.h
@@ -23,32 +23,47 @@
#include <sys/stat.h>
#include <fcntl.h>
-#define USE_GLES2 0 // For Desktop PC leave as 0, it will use the exisiting OpenGL context creationg code but run with the GLES2 renderer
- // Set to 1 for when comipling for a real GLES device
+#define USE_GLAD_LOADER 0 // Set to 1 to use the GLAD loader, otherwise use noramal GZDoom loader for PC
-#if (USE_GLES2)
+#if (USE_GLAD_LOADER)
#include "glad/glad.h"
-// Below are used extensions for GLES
-typedef void* (APIENTRYP PFNGLMAPBUFFERRANGEEXTPROC)(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
-GLAPI PFNGLMAPBUFFERRANGEEXTPROC glMapBufferRange;
-
-typedef GLboolean(APIENTRYP PFNGLUNMAPBUFFEROESPROC)(GLenum target);
-GLAPI PFNGLUNMAPBUFFEROESPROC glUnmapBuffer;
-
-typedef void (APIENTRYP PFNGLVERTEXATTRIBIPOINTERPROC) (GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer);
-GLAPI PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
-
-#define GL_DEPTH24_STENCIL8 0x88F0
-#define GL_MAP_PERSISTENT_BIT 0x0040
-#define GL_MAP_READ_BIT 0x0001
-#define GL_MAP_WRITE_BIT 0x0002
-#define GL_MAP_UNSYNCHRONIZED_BIT 0x0020
-#define GL_MAP_INVALIDATE_BUFFER_BIT 0x0008
-#define GL_BGRA 0x80E1
-#define GL_DEPTH_CLAMP 0x864F
-#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
-#define GL_INT_2_10_10_10_REV 0x8D9F
+ // Below are used extensions for GLES
+ typedef void* (APIENTRYP PFNGLMAPBUFFERRANGEEXTPROC)(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
+ GLAPI PFNGLMAPBUFFERRANGEEXTPROC glMapBufferRange;
+
+ typedef GLboolean(APIENTRYP PFNGLUNMAPBUFFEROESPROC)(GLenum target);
+ GLAPI PFNGLUNMAPBUFFEROESPROC glUnmapBuffer;
+
+ typedef void (APIENTRYP PFNGLVERTEXATTRIBIPOINTERPROC) (GLuint index, GLint size, GLenum type, GLsizei stride, const void* pointer);
+ GLAPI PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
+
+ typedef GLsync(APIENTRYP PFNGLFENCESYNCPROC)(GLenum condition, GLbitfield flags);
+ GLAPI PFNGLFENCESYNCPROC glFenceSync;
+
+ typedef GLenum(APIENTRYP PFNGLCLIENTWAITSYNCPROC)(GLsync sync, GLbitfield flags, GLuint64 timeout);
+ GLAPI PFNGLCLIENTWAITSYNCPROC glClientWaitSync;
+
+ typedef void (APIENTRYP PFNGLDELETESYNCPROC)(GLsync sync);
+ GLAPI PFNGLDELETESYNCPROC glDeleteSync;
+
+ #define GL_DEPTH24_STENCIL8 0x88F0
+ #define GL_MAP_PERSISTENT_BIT 0x0040
+ #define GL_MAP_READ_BIT 0x0001
+ #define GL_MAP_WRITE_BIT 0x0002
+ #define GL_MAP_UNSYNCHRONIZED_BIT 0x0020
+ #define GL_MAP_INVALIDATE_BUFFER_BIT 0x0008
+ #define GL_BGRA 0x80E1
+ #define GL_DEPTH_CLAMP 0x864F
+ #define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
+ #define GL_INT_2_10_10_10_REV 0x8D9F
+ #define GL_RED 0x1903
+ #define GL_TEXTURE_SWIZZLE_RGBA 0x8E46
+ #define GL_SYNC_GPU_COMMANDS_COMPLETE 0x9117
+ #define GL_SYNC_FLUSH_COMMANDS_BIT 0x00000001
+ #define GL_ALREADY_SIGNALED 0x911A
+ #define GL_CONDITION_SATISFIED 0x911C
+
#else
#include "gl_load/gl_load.h"
#endif
@@ -66,6 +81,13 @@ GLAPI PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
namespace OpenGLESRenderer
{
+ enum
+ {
+ GLES_MODE_GLES = 0,
+ GLES_MODE_OGL2 = 1,
+ GLES_MODE_OGL3 = 2,
+ };
+
struct RenderContextGLES
{
unsigned int flags;
@@ -77,7 +99,7 @@ namespace OpenGLESRenderer
bool forceGLSLv100;
bool depthClampAvailable;
bool anistropicFilterAvailable;
- bool gles3Features;
+ int glesMode;
const char* shaderVersionString;
int max_texturesize;
char* vendorstring;
--
2.39.3
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