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GPU/HW: Support OpenGL ES

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This commit is contained in:
Connor McLaughlin
2019-11-06 01:33:09 +10:00
parent b28610e30b
commit ff8cef4da3
5 changed files with 97 additions and 54 deletions
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71
src/core/gpu_hw_opengl.cpp
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@ -11,6 +11,7 @@ GPU_HW_OpenGL::GPU_HW_OpenGL() : GPU_HW() {}
GPU_HW_OpenGL::~GPU_HW_OpenGL()
{
// TODO: Destroy objects...
if (m_host_display)
{
m_host_display->SetDisplayTexture(nullptr, 0, 0, 0, 0, 0, 0, 1.0f);
@ -21,13 +22,14 @@ GPU_HW_OpenGL::~GPU_HW_OpenGL()
bool GPU_HW_OpenGL::Initialize(HostDisplay* host_display, System* system, DMA* dma,
InterruptController* interrupt_controller, Timers* timers)
{
if (host_display->GetRenderAPI() != HostDisplay::RenderAPI::OpenGL)
if (host_display->GetRenderAPI() != HostDisplay::RenderAPI::OpenGL &&
host_display->GetRenderAPI() != HostDisplay::RenderAPI::OpenGLES)
{
Log_ErrorPrintf("Host render API type is incompatible");
return false;
}
SetCapabilities();
SetCapabilities(host_display);
if (!GPU_HW::Initialize(host_display, system, dma, interrupt_controller, timers))
return false;
@ -108,8 +110,10 @@ std::tuple<s32, s32> GPU_HW_OpenGL::ConvertToFramebufferCoordinates(s32 x, s32 y
return std::make_tuple(x, static_cast<s32>(static_cast<s32>(VRAM_HEIGHT) - y));
}
void GPU_HW_OpenGL::SetCapabilities()
void GPU_HW_OpenGL::SetCapabilities(HostDisplay* host_display)
{
m_is_gles = (host_display->GetRenderAPI() == HostDisplay::RenderAPI::OpenGLES);
GLint max_texture_size = VRAM_WIDTH;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
Log_InfoPrintf("Max texture size: %dx%d", max_texture_size, max_texture_size);
@ -128,9 +132,17 @@ void GPU_HW_OpenGL::SetCapabilities()
if (!GLAD_GL_VERSION_4_3 && !GLAD_GL_EXT_copy_image)
Log_WarningPrintf("GL_EXT_copy_image missing, this may affect performance.");
glGetIntegerv(GL_MAX_TEXTURE_BUFFER_SIZE, reinterpret_cast<GLint*>(&m_max_texture_buffer_size));
if (m_max_texture_buffer_size < VRAM_WIDTH * VRAM_HEIGHT)
Log_WarningPrintf("Maximum texture buffer size is less than VRAM size, VRAM writes may be slower.");
m_supports_texture_buffer = (GLAD_GL_VERSION_3_1 || GLAD_GL_ES_VERSION_3_2);
if (m_uniform_stream_buffer)
{
glGetIntegerv(GL_MAX_TEXTURE_BUFFER_SIZE, reinterpret_cast<GLint*>(&m_max_texture_buffer_size));
if (m_max_texture_buffer_size < VRAM_WIDTH * VRAM_HEIGHT)
Log_WarningPrintf("Maximum texture buffer size is less than VRAM size, VRAM writes may be slower.");
}
else
{
Log_WarningPrintf("Texture buffers are not supported, VRAM writes will be slower.");
}
}
void GPU_HW_OpenGL::CreateFramebuffer()
@ -234,16 +246,19 @@ void GPU_HW_OpenGL::CreateTextureBuffer()
if (!m_texture_stream_buffer)
Panic("Failed to create texture stream buffer");
glGenTextures(1, &m_texture_buffer_r16ui_texture);
glBindTexture(GL_TEXTURE_BUFFER, m_texture_buffer_r16ui_texture);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R16UI, m_texture_stream_buffer->GetGLBufferId());
if (m_max_texture_buffer_size > 0)
{
glGenTextures(1, &m_texture_buffer_r16ui_texture);
glBindTexture(GL_TEXTURE_BUFFER, m_texture_buffer_r16ui_texture);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R16UI, m_texture_stream_buffer->GetGLBufferId());
}
m_texture_stream_buffer->Unbind();
}
bool GPU_HW_OpenGL::CompilePrograms()
{
GPU_HW_ShaderGen shadergen(GPU_HW_ShaderGen::API::OpenGL, m_resolution_scale, m_true_color);
GPU_HW_ShaderGen shadergen(m_host_display->GetRenderAPI(), m_resolution_scale, m_true_color);
for (u32 render_mode = 0; render_mode < 4; render_mode++)
{
@ -269,7 +284,8 @@ bool GPU_HW_OpenGL::CompilePrograms()
prog.BindAttribute(3, "a_texpage");
}
prog.BindFragData(0, "o_col0");
if (!m_is_gles)
prog.BindFragData(0, "o_col0");
if (!prog.Link())
return false;
@ -295,7 +311,9 @@ bool GPU_HW_OpenGL::CompilePrograms()
if (!prog.Compile(vs, fs))
return false;
prog.BindFragData(0, "o_col0");
if (!m_is_gles)
prog.BindFragData(0, "o_col0");
if (!prog.Link())
return false;
@ -306,21 +324,26 @@ bool GPU_HW_OpenGL::CompilePrograms()
}
}
if (!m_vram_write_program.Compile(shadergen.GenerateScreenQuadVertexShader(),
shadergen.GenerateVRAMWriteFragmentShader()))
if (m_supports_texture_buffer)
{
return false;
if (!m_vram_write_program.Compile(shadergen.GenerateScreenQuadVertexShader(),
shadergen.GenerateVRAMWriteFragmentShader()))
{
return false;
}
if (!m_is_gles)
m_vram_write_program.BindFragData(0, "o_col0");
if (!m_vram_write_program.Link())
return false;
m_vram_write_program.BindUniformBlock("UBOBlock", 1);
m_vram_write_program.Bind();
m_vram_write_program.Uniform1i("samp0", 0);
}
m_vram_write_program.BindFragData(0, "o_col0");
if (!m_vram_write_program.Link())
return false;
m_vram_write_program.BindUniformBlock("UBOBlock", 1);
m_vram_write_program.Bind();
m_vram_write_program.Uniform1i("samp0", 0);
return true;
}